LIST OF UNITED STATES PATENTS
List of United States patents granted to Thomas A. Edison, arranged
according to dates of execution of applications for such patents. This
list shows the inventions as Mr. Edison has worked upon them from year
to year
NO. TITLE OF PATENT DATE EXECUTED DATE EXECUTED
90,646, Electrographic Vote Recorder . . . . .Oct. 13, 1868
91,527 Printing Telegraph (reissued October
25, 1870, numbered 4166, and August
5, 1873, numbered 5519). . . . . . . .Jan. 25, 1869
96,567 Apparatus for Printing Telegraph (reissued
February 1, 1870, numbered
3820). . . . . . . . . . . . . . . . .Aug. 17, 1869
96,681 Electrical Switch for Telegraph Apparatus Aug. 27, 1869
102,320 Printing Telegraph—Pope and Edison
(reissued April 17, 1877, numbered
7621, and December 9, 1884, numbered
10,542). . . . . . . . . . . . . . . Sept. 16, 1869
103,924 Printing Telegraphs—Pope and Edison
(reissued August 5, 1873)
103,035 Electromotor Escapement. . . . . . . . Feb. 5, 1870
128,608 Printing Telegraph Instruments . . . . .May 4, 1870
114,656 Telegraph Transmitting Instruments . .June 22, 1870
114,658 Electro Magnets for Telegraph
Instruments. . . . . . . . . . . . . .June 22, 1870
114,657 Relay Magnets for Telegraph
Instruments. . . . . . . . . . . . . .Sept. 6, 1870
111,112 Electric Motor Governors . . . . . . .June 29, 1870
113,033 Printing Telegraph Apparatus . . . . .Nov. 17, 1870
113,034 Printing Telegraph Apparatus . . . . .Jan. 10, 1871
123,005 Telegraph Apparatus. . . . . . . . . .July 26, 1871
123,006 Printing Telegraph . . . . . . . . . .July 26, 1871
123,984 Telegraph Apparatus. . . . . . . . . .July 26, 1871
124,800 Telegraphic Recording Instruments. . .Aug. 12, 1871
121,601 Machinery for Perforating Paper for
Telegraph Purposes . . . . . . . . . .Aug. 16, 1871
126,535 Printing Telegraphs. . . . . . . . . .Nov. 13, 1871
133,841 Typewriting Machine. . . . . . . . . .Nov. 13, 1871
126,532 Printing Telegraphs. . . . . . . . . . .Jan. 3 1872
126,531 Printing Telegraphs. . . . . . . . . .Jan. 17, 1872
126,534 Printing Telegraphs. . . . . . . . . .Jan. 17, 1872
126,528 Type Wheels for Printing Telegraphs. .Jan. 23, 1872
126,529 Type Wheels for Printing Telegraphs. .Jan. 23, 1872
126,530 Printing Telegraphs. . . . . . . . . .Feb. 14, 1872
126,533 Printing Telegraphs. . . . . . . . . .Feb. 14, 1872
132,456 Apparatus for Perforating Paper for
Telegraphic Use. . . . . . . . . . . March 15, 1872
132,455 Improvement in Paper for Chemical
Telegraphs . . . . . . . . . . . . . April 10, 1872
133,019 Electrical Printing Machine. . . . . April 18, 1872
128,131 Printing Telegraphs. . . . . . . . . April 26, 1872
128,604 Printing Telegraphs. . . . . . . . . April 26, 1872
128,605 Printing Telegraphs. . . . . . . . . April 26, 1872
128,606 Printing Telegraphs. . . . . . . . . April 26, 1872
128,607 Printing Telegraphs. . . . . . . . . April 26, 1872
131,334 Rheotomes or Circuit Directors . . . . .May 6, 1872
134,867 Automatic Telegraph Instruments. . . . .May 8, 1872
134,868 Electro Magnetic Adjusters . . . . . . .May 8, 1872
130,795 Electro Magnets. . . . . . . . . . . . .May 9, 1872
131,342 Printing Telegraphs. . . . . . . . . . .May 9, 1872
131,341 Printing Telegraphs. . . . . . . . . . May 28, 1872
131,337 Printing Telegraphs. . . . . . . . . .June 10, 1872
131,340 Printing Telegraphs. . . . . . . . . .June 10, 1872
131,343 Transmitters and Circuits for Printing
Telegraph. . . . . . . . . . . . . . .June 10, 1872
131,335 Printing Telegraphs. . . . . . . . . .June 15, 1872
131,336 Printing Telegraphs. . . . . . . . . .June 15, 1872
131,338 Printing Telegraphs. . . . . . . . . .June 29, 1872
131,339 Printing Telegraphs. . . . . . . . . .June 29, 1872
131,344 Unison Stops for Printing Telegraphs .June 29, 1872
134,866 Printing and Telegraph Instruments . .Oct. 16, 1872
138,869 Printing Telegraphs. . . . . . . . . .Oct. 16, 1872
142,999 Galvanic Batteries . . . . . . . . . .Oct. 31, 1872
141,772 Automatic or Chemical Telegraphs . . . Nov. 5, 1872
135,531 Circuits for Chemical Telegraphs . . . Nov. 9, 1872
146,812 Telegraph Signal Boxes . . . . . . . .Nov. 26, 1872
141,773 Circuits for Automatic Telegraphs. . .Dec. 12, 1872
141,776 Circuits for Automatic Telegraphs. . .Dec. 12, 1872
150,848 Chemical or Automatic Telegraphs . . .Dec. 12, 1872
139,128 Printing Telegraphs. . . . . . . . . .Jan. 21, 1873
139,129 Printing Telegraphs. . . . . . . . . .Feb. 13, 1873
140,487 Printing Telegraphs. . . . . . . . . .Feb. 13, 1873
140,489 Printing Telegraphs. . . . . . . . . .Feb. 13, 1873
138,870 Printing Telegraphs. . . . . . . . . .March 7, 1873
141,774 Chemical Telegraphs. . . . . . . . . .March 7, 1873
141,775 Perforator for Automatic Telegraphs. .March 7, 1873
141,777 Relay Magnets. . . . . . . . . . . . .March 7, 1873
142,688 Electric Regulators for Transmitting
Instruments . . . . . . . . . . . . . .March 7, 1873
156,843 Duplex Chemical Telegraphs . . . . . .March 7, 1873
147,312 Perforators for Automatic Telegraphy March 24, 1873
147,314 Circuits for Chemical Telegraphs . . March 24, 1873
150,847 Receiving Instruments for Chemical
Telegraphs . . . . . . . . . . . . . March 24, 1873
140,488 Printing Telegraphs. . . . . . . . . April 23, 1873
147,311 Electric Telegraphs. . . . . . . . . April 23, 1873
147,313 Chemical Telegraphs. . . . . . . . . April 23, 1873
147,917 Duplex Telegraphs. . . . . . . . . . April 23, 1873
150,846 Telegraph Relays . . . . . . . . . . April 23, 1873
160,405 Adjustable Electro Magnets for
Relays, etc. . . . . . . . . . . . . April 23, 1873
162,633 Duplex Telegraphs. . . . . . . . . . April 22, 1873
151,209 Automatic Telegraphy and Perforators
Therefor . . . . . . . . . . . . . . .Aug. 25, 1873
160,402 Solutions for Chemical Telegraph PaperSept. 29, 1873
160,404 Solutions for Chemical Telegraph PaperSept. 29, 1873
160,580 Solutions for Chemical Telegraph PaperOct. 14, 1873
160,403 Solutions for Chemical Telegraph PaperOct. 29, 1873
154,788 District Telegraph Signal Box. . . . .April 2, 1874
168,004 Printing Telegraph . . . . . . . . . . May 22, 1874
166,859 Chemical Telegraphy. . . . . . . . . . June 1, 1874
166,860 Chemical Telegraphy. . . . . . . . . . June 1, 1874
166,861 Chemical Telegraphy. . . . . . . . . . June 1, 1874
158,787 Telegraph Apparatus. . . . . . . . . . Aug. 7, 1874
172,305 Automatic Roman Character
Telegraph. . . . . . . . . . . . . . . Aug. 7, 1874
173,718 Automatic Telegraphy . . . . . . . . . Aug. 7, 1874
178,221 Duplex Telegraphs. . . . . . . . Aug. 19, 1874
178,222 Duplex Telegraphs. . . . . . . . . . .Aug. 19, 1874
178,223 Duplex Telegraphs. . . . . . . . . . .Aug. 19, 1874
180,858 Duplex Telegraphs. . . . . . . . . . .Aug. 19, 1874
207,723 Duplex Telegraphs. . . . . . . . . . .Aug. 19, 1874
480,567 Duplex Telegraphs. . . . . . . . . . .Aug. 19, 1874
207,724 Duplex Telegraphs. . . . . . . . . . .Dec. 14, 1874
168,242 Transmitter and Receiver for Automatic
Telegraph. . . . . . . . . . . . . . .Jan. 18, 1875
168,243 Automatic Telegraphs . . . . . . . . .Jan. 18, 1875
168,385 Duplex Telegraphs. . . . . . . . . . .Jan. 18, 1875
168,466 Solution for Chemical Telegraphs . . .Jan. 18, 1875
168,467 Recording Point for Chemical Telegraph Jan. 18, 1875
195,751 Automatic Telegraphs . . . . . . . . . Jan. 18 1875
195,752 Automatic Telegraphs . . . . . . . . .Jan. 19, 1875
171,273 Telegraph Apparatus. . . . . . . . . . Feb 11, 1875
169,972 Electric Signalling Instrument . . . . Feb 24, 1875
209,241 Quadruplex Telegraph Repeaters (reissued
September 23, 1879, numbered
8906). . . . . . . . . . . . . . . . . Feb 24, 1875
180,857 Autographic Printing . . . . . . . . .March 7, 1876
198,088 Telephonic Telegraphs. . . . . . . . .April 3, 1876
198,089 Telephonic or Electro Harmonic
Telegraphs . . . . . . . . . . . . . .April 3, 1876
182,996 Acoustic Telegraphs. . . . . . . . . . .May 9, 1876
186,330 Acoustic Electric Telegraphs . . . . . .May 9, 1876
186,548 Telegraph Alarm and Signal Apparatus . .May 9, 1876
198,087 Telephonic Telegraphs. . . . . . . . . .May 9, 1876
185,507 Electro Harmonic Multiplex Telegraph .Aug. 16, 1876
200,993 Acoustic Telegraph . . . . . . . . . .Aug. 26, 1876
235,142 Acoustic Telegraph . . . . . . . . . .Aug. 26, 1876
200,032 Synchronous Movements for Electric
Telegraphs . . . . . . . . . . . . . .Oct. 30, 1876
200,994 Automatic Telegraph Perforator and
Transmitter. . . . . . . . . . . . . .Oct. 30, 1876
205,370 Pneumatic Stencil Pens . . . . . . . . Feb. 3, 1877
213,554 Automatic Telegraphs . . . . . . . . . Feb. 3, 1877
196,747 Stencil Pens . . . . . . . . . . . . April 18, 1877
203,329 Perforating Pens . . . . . . . . . . April 18, 1877
474,230 Speaking Telegraph . . . . . . . . . April 18, 1877
217,781 Sextuplex Telegraph. . . . . . . . . . .May 8, 1877
230,621 Addressing Machine . . . . . . . . . . .May 8, 1877
377,374 Telegraphy . . . . . . . . . . . . . . .May 8, 1877
453,601 Sextuplex Telegraph. . . . . . . . . . May 31, 1877
452,913 Sextuplex Telegraph. . . . . . . . . . May 31, 1877
512,872 Sextuplex Telegraph. . . . . . . . . . May 31, 1877
474,231 Speaking Telegraph . . . . . . . . . . July 9, 1877
203,014 Speaking Telegraph . . . . . . . . . .July 16, 1877
208,299 Speaking Telegraph . . . . . . . . . .July 16, 1877
203,015 Speaking Telegraph . . . . . . . . . .Aug. 16, 1877
420,594 Quadruplex Telegraph . . . . . . . . .Aug. 16, 1877
492,789 Speaking Telegraph . . . . . . . . . .Aug. 31, 1877
203,013 Speaking Telegraph . . . . . . . . . . Dec. 8, 1877
203 018 Telephone or Speaking Telegraph. . . . Dec. 8, 1877
200 521 Phonograph or Speaking Machine . . . .Dec. 15, 1877
203,019 Circuit for Acoustic or Telephonic
Telegraphs . . . . . . . . . . . . . .Feb. 13, 1878
201,760 Speaking Machines. . . . . . . . . . .Feb. 28, 1878
203,016 Speaking Machines. . . . . . . . . . .Feb. 28, 1878
203,017 Telephone Call Signals . . . . . . . .Feb. 28, 1878
214,636 Electric Lights. . . . . . . . . . . . Oct. 5, 1878
222,390 Carbon Telephones. . . . . . . . . . . Nov. 8, 1878
217,782 Duplex Telegraphs. . . . . . . . . . .Nov. 11, 1878
214,637 Thermal Regulator for Electric Lights.Nov. 14, 1878
210,767 Vocal Engines. . . . . . . . . . . . .Aug. 31, 1878
218,166 Magneto Electric Machines. . . . . . . Dec. 3, 1878
218,866 Electric Lighting Apparatus. . . . . . Dec. 3, 1878
219,628 Electric Lights. . . . . . . . . . . . Dec. 3, 1878
295,990 Typewriter . . . . . . . . . . . . . . Dec. 4, 1878
218,167 Electric Lights. . . . . . . . . . . .Dec. 31, 1878
224,329 Electric Lighting Apparatus. . . . . .Jan. 23, 1879
227,229 Electric Lights. . . . . . . . . . . .Jan. 28, 1879
227,227 Electric Lights. . . . . . . . . . . . Feb. 6, 1879
224.665 Autographic Stencils for Printing. . March 10, 1879
227.679 Phonograph . . . . . . . . . . . . . March 19, 1879
221,957 Telephone. . . . . . . . . . . . . . March 24, 1879
227,229 Electric Lights. . . . . . . . . . . April 12, 1879
264,643 Magneto Electric Machines. . . . . . April 21, 1879
219,393 Dynamo Electric Machines . . . . . . . July 7, 1879
231,704 Electro Chemical Receiving Telephone .July 17, 1879
266,022 Telephone. . . . . . . . . . . . . . . Aug. 1, 1879
252,442 Telephone. . . . . . . . . . . . . . . Aug. 4, 1879
222,881 Magneto Electric Machines. . . . . . .Sept. 4, 1879
223,898 Electric Lamp. . . . . . . . . . . . . Nov. 1, 1879
230,255 Electric Lamps . . . . . . . . . . . .Jan. 28, 1880
248,425 Apparatus for Producing High Vacuums Jan.28 1880
265,311 Electric Lamp and Holder for Same. . . Jan. 28 1880
369,280 System of Electrical Distribution. . .Jan. 28, 1880
227,226 Safety Conductor for Electric Lights .March 10,1880
228,617 Brake for Electro Magnetic Motors. . March 10, 1880
251,545 Electric Meter . . . . . . . . . . . March 10, 1880
525,888 Manufacture of Carbons for Electric
Lamps. . . . . . . . . . . . . . . . March 10, 1880
264,649 Dynamo or Magneto Electric Machines. March 11,
228,329 Magnetic Ore Separator . . . . . . . .April 3, 1880
238,868 Manufacture of Carbons for Incandescent
Electric Lamps . . . . . . . . . . . April 25, 1880
237,732 Electric Light . . . . . . . . . . . .June 15, 1880
248,417 Manufacturing Carbons for Electric
Lights . . . . . . . . . . . . . . . .June 15, 1880
298,679 Treating Carbons for Electric Lights .June 15, 1880
248,430 Electro Magnetic Brake . . . . . . . . July 2, 1880
265,778 Electro Magnetic Railway Engine. . . . July 3, 1880
248,432 Magnetic Separator . . . . . . . . . .July 26, 1880
239,150 Electric Lamp. . . . . . . . . . . . .July 27, 1880
239,372 Testing Electric Light Carbons—Edison
and Batchelor. . . . . . . . . . . . .July 28, 1880
251,540 Carbon Electric Lamps. . . . . . . . .July 28, 1880
263,139 Manufacture of Carbons for Electric
Lamps. . . . . . . . . . . . . . . . .July 28, 1880
434,585 Telegraph Relay. . . . . . . . . . . .July 29, 1880
248 423 Carbonizer . . . . . . . . . . . . . .July 30, 1880
263 140 Dynamo Electric Machines . . . . . . .July 30, 1880
248,434 Governor for Electric Engines. . . . .July 31, 1880
239,147 System of Electric Lighting. . . . . .July 31, 1880
264,642 Electric Distribution and Translation
System . . . . . . . . . . . . . . . . Aug. 4, 1880
293,433 Insulation of Railroad Tracks used for
Electric Circuits. . . . . . . . . . . Aug. 6, 1880
239,373 Electric Lamp. . . . . . . . . . . . . Aug. 7, 1880
239,745 Electric Lamp. . . . . . . . . . . . . Aug. 7, 1880
263,135 Electric Lamp. . . . . . . . . . . . . Aug. 7, 1880
251,546 Electric Lamp. . . . . . . . . . . . .Aug. 10, 1880
239,153 Electric Lamp. . . . . . . . . . . . .Aug. 11, 1880
351,855 Electric Lamp. . . . . . . . . . . . .Aug. 11, 1880
248,435 Utilizing Electricity as Motive Power.Aug. 12, 1880
263,132 Electro Magnetic Roller. . . . . . . .Aug. 14, 1880
264,645 System of Conductors for the Distribution
of Electricity . . . . . . . . . . . .Sept. 1, 1880
240,678 Webermeter . . . . . . . . . . . . . Sept. 22, 1880
239,152 System of Electric Lighting. . . . . .Oct. 14, 1880
239,148 Treating Carbons for Electric Lights .Oct. 15, 1880
238,098 Magneto Signalling Apparatus—Edison
and Johnson. . . . . . . . . . . . . .Oct. 21, 1880
242,900 Manufacturing Carbons for Electric
Lamps. . . . . . . . . . . . . . . . .Oct. 21, 1880
251,556 Regulator for Magneto or Dynamo
Electric Machines. . . . . . . . . . .Oct. 21, 1880
248,426 Apparatus for Treating Carbons for
Electric Lamps . . . . . . . . . . . . Nov. 5, 1880
239,151 Forming Enlarged Ends on Carbon
Filaments. . . . . . . . . . . . . . .Nov. 19, 1880
12,631 Design Patent—Incandescent Electric
Lamp . . . . . . . . . . . . . . . . .Nov. 23, 1880
239,149 Incandescing Electric Lamp . . . . . . Dec. 3, 1880
242,896 Incandescent Electric Lamp . . . . . . Dec. 3, 1880
242,897 Incandescent Electric Lamp . . . . . . Dec. 3, 1880
248,565 Webermeter . . . . . . . . . . . . . . Dec. 3, 1880
263,878 Electric Lamp. . . . . . . . . . . . . Dec. 3, 1880
239,154 Relay for Telegraphs . . . . . . . . .Dec. 11, 1880
242,898 Dynamo Electric Machine. . . . . . . .Dec. 11, 1880
248,431 Preserving Fruit . . . . . . . . . . .Dec. 11, 1880
265,777 Treating Carbons for Electric Lamps. .Dec. 11, 1880
239,374 Regulating the Generation of Electric
Currents . . . . . . . . . . . . . . .Dec. 16, 1880
248,428 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Dec. 16, 1880
248,427 Apparatus for Treating Carbons for
Electric Lamps . . . . . . . . . . . .Dec. 21, 1880
248,437 Apparatus for Treating Carbons for
Electric Lamps . . . . . . . . . . . .Dec. 21, 1880
248,416 Manufacture of Carbons for Electric
Lights . . . . . . . . . . . . . . . .Dec. 30, 1880
242,899 Electric Lighting. . . . . . . . . . .Jan. 19, 1881
248,418 Electric Lamp. . . . . . . . . . . . . Jan. 19 1881
248,433 Vacuum Apparatus . . . . . . . . . . . Jan. 19 1881
251,548 Incandescent Electric Lamps. . . . . .Jan. 19, 1881
406,824 Electric Meter . . . . . . . . . . . .Jan. 19, 1881
248,422 System of Electric Lighting. . . . . .Jan. 20, 1881
431,018 Dynamo or Magneto Electric Machine . . Feb. 3, 1881
242,901 Electric Motor . . . . . . . . . . . .Feb. 24, 1881
248,429 Electric Motor . . . . . . . . . . . .Feb. 24, 1881
248,421 Current Regulator for Dynamo Electric
Machine. . . . . . . . . . . . . . . .Feb. 25, 1881
251,550 Magneto or Dynamo Electric Machines. .Feb. 26, 1881
251,555 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 26, 1881
482,549 Means for Controlling Electric
Generation . . . . . . . . . . . . . .March 2, 1881
248,420 Fixture and Attachment for Electric
Lamps. . . . . . . . . . . . . . . . .March 7, 1881
251,553 Electric Chandeliers . . . . . . . . .March 7, 1881
251,554 Electric Lamp and Socket or Holder . .March 7, 1881
248,424 Fitting and Fixtures for Electric
Lamps. . . . . . . . . . . . . . . . .March 8, 1881
248,419 Electric Lamp. . . . . . . . . . . . March 30, 1881
251,542 System of Electric Light . . . . . . April 19, 1881
263,145 Making Incandescents . . . . . . . . April 19, 1881
266,447 Electric Incandescent Lamp . . . . . April 21, 1881
251,552 Underground Conductors . . . . . . . April 22, 1881
476,531 Electric Lighting System . . . . . . April 22, 1881
248,436 Depositing Cell for Plating the Connections
of Electric Lamps. . . . . . . . . . . May 17, 1881
251,539 Electric Lamp. . . . . . . . . . . . . May 17, 1881
263,136 Regulator for Dynamo or Magneto
Electric Machine . . . . . . . . . . . May 17, 1881
251,557 Webermeter . . . . . . . . . . . . . . May 19, 1881
263,134 Regulator for Magneto Electric
Machine. . . . . . . . . . . . . . . . May 19, 1881
251,541 Electro Magnetic Motor . . . . . . . . May 20, 1881
251,544 Manufacture of Electric Lamps. . . . . May 20, 1881
251,549 Electric Lamp and the Manufacture
thereof. . . . . . . . . . . . . . . . May 20, 1881
251,558 Webermeter . . . . . . . . . . . . . . May 20, 1881
341,644 Incandescent Electric Lamp . . . . . . May 20, 1881
251,551 System of Electric Lighting. . . . . . May 21, 1881
263,137 Electric Chandelier. . . . . . . . . . May 21, 1881
263,141 Straightening Carbons for Incandescent
Lamps. . . . . . . . . . . . . . . . . May 21, 1881
264,657 Incandescent Electric Lamps. . . . . . May 21, 1881
251,543 Electric Lamp. . . . . . . . . . . . . May 24, 1881
251,538 Electric Light . . . . . . . . . . . . May 27, 1881
425,760 Measurement of Electricity in Distribution
System . . . . . . . . . . . . . . . .May 3 1, 1881
251,547 Electrical Governor. . . . . . . . . . June 2, 1881
263,150 Magneto or Dynamo Electric Machines. June 3, 1881
263,131 Magnetic Ore Separator . . . . . . . . June 4, 1881
435,687 Means for Charging and Using Secondary
Batteries. . . . . . . . . . . . . . .June 21, 1881
263,143 Magneto or Dynamo Electric Machines. .June 24, 1881
251,537 Dynamo Electric Machine. . . . . . . .June 25, 1881
263,147 Vacuum Apparatus . . . . . . . . . . .July 1, 188 1
439,389 Electric Lighting System . . . . . . . July 1, 1881
263,149 Commutator for Dynamo or Magneto
Electric Machines. . . . . . . . . . .July 22, 1881
479,184 Facsimile Telegraph—Edison and Kenny.July 26, 1881
400,317 Ore Separator. . . . . . . . . . . . .Aug. 11, 1881
425,763 Commutator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Aug. 20, 1881
263,133 Dynamo or Magneto Electric Machine . .Aug. 24, 1881
263,142 Electrical Distribution System . . . .Aug. 24, 1881
264,647 Dynamo or Magneto Electric Machines. .Aug. 24, 1881
404,902 Electrical Distribution System . . . .Aug. 24, 1881
257,677 Telephone. . . . . . . . . . . . . . .Sept. 7, 1881
266,021 Telephone. . . . . . . . . . . . . . .Sept. 7, 1881
263,144 Mold for Carbonizing Incandescents . Sept. 19, 1881
265,774 Maintaining Temperatures in
Webermeters. . . . . . . . . . . . . Sept. 21, 1881
264,648 Dynamo or Magneto Electric Machines. Sept. 23, 1881
265,776 Electric Lighting System . . . . . . Sept. 27, 1881
524,136 Regulator for Dynamo Electrical
Machines . . . . . . . . . . . . . . Sept. 27, 1881
273,715 Malleableizing Iron. . . . . . . . . . Oct. 4, 1881
281,352 Webermeter . . . . . . . . . . . . . . Oct. 5, 1881
446,667 Locomotives for Electric Railways. . .Oct. 11, 1881
288,318 Regulator for Dynamo or Magneto
Electric Machines. . . . . . . . . . .Oct. 17, 1881
263,148 Dynamo or Magneto Electric Machines. Oct. 25, 1881
264,646 Dynamo or Magneto Electric Machines. Oct. 25, 1881
251,559 Electrical Drop Light. . . . . . . . .Oct. 25, 1881
266,793 Electric Distribution System . . . . .Oct. 25, 1881
358,599 Incandescent Electric Lamp . . . . . .Oct. 29, 1881
264,673 Regulator for Dynamo Electric Machine. Nov. 3, 1881
263,138 Electric Arc Light . . . . . . . . . . Nov. 7, 1881
265,775 Electric Arc Light . . . . . . . . . . .Nov. 7 1881
297,580 Electric Arc Light . . . . . . . . . . .Nov. 7 1881
263,146 Dynamo Magneto Electric Machines . . .Nov. 22, 1881
266,588 Vacuum Apparatus . . . . . . . . . . .Nov. 25, 1881
251,536 Vacuum Pump. . . . . . . . . . . . . . Dec. 5, 1881
264,650 Manufacturing Incandescent Electric
Lamps. . . . . . . . . . . . . . . . . Dec. 5, 1881
264,660 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . Dec. 5, 1881
379,770 Incandescent Electric Lamp . . . . . . Dec. 5, 1881
293,434 Incandescent Electric Lamp . . . . . . Dec. 5, 1881
439,391 Junction Box for Electric Wires. . . . Dec. 5, 1881
454,558 Incandescent Electric Lamp . . . . . . Dec. 5, 1881
264,653 Incandescent Electric Lamp . . . . . .Dec. 13, 1881
358,600 Incandescing Electric Lamp . . . . . .Dec. 13, 1881
264,652 Incandescent Electric Lamp . . . . . .Dec. 15, 1881
278,419 Dynamo Electric Machines . . . . . . .Dec. 15, 1881
265,779 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Jan. 17, 1882
264,654 Incandescent Electric Lamps. . . . . .Feb. 10, 1882
264,661 Regulator for Dynamo Electric Machines Feb. 10, 1882
264,664 Regulator for Dynamo Electric Machines Feb. 10, 1882
264,668 Regulator for Dynamo Electric Machines Feb. 10, 1882
264,669 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 10, 1882
264,671 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 10, 1882
275,613 Incandescing Electric Lamp . . . . . .Feb. 10, 1882
401,646 Incandescing Electric Lamp . . . . . .Feb. 10, 1882
264,658 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 28, 1882
264,659 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 28, 1882
265,780 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 28, 1882
265,781 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 28, 1882
278,416 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Feb. 28, 1882
379,771 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Feb. 28, 1882
272,034 Telephone. . . . . . . . . . . . . . March 30, 1882
274,576 Transmitting Telephone . . . . . . . March 30, 1882
274,577 Telephone. . . . . . . . . . . . . . March 30, 1882
264,662 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . .May 1, 1882
264,663 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . .May 1, 1882
264,665 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . .May 1, 1882
264,666 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . .May 1, 1882
268,205 Dynamo or Magneto Electric
Machine. . . . . . . . . . . . . . . . .May 1, 1882
273,488 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . .May 1, 1882
273,492 Secondary Battery. . . . . . . . . . . May 19, 1882
460,122 Process of and Apparatus for
Generating Electricity . . . . . . . . May 19, 1882
466,460 Electrolytic Decomposition . . . . . .May 19,. 1882
264,672 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . May 22, 1882
264,667 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . May 22, 1882
265,786 Apparatus for Electrical Transmission
of Power . . . . . . . . . . . . . . . May 22, 1882
273,828 System of Underground Conductors of
Electric Distribution. . . . . . . . . May 22, 1882
379,772 System of Electrical Distribution. . . May 22, 1882
274,292 Secondary Battery. . . . . . . . . . . June 3, 1882
281,353 Dynamo or Magneto Electric Machine . . June 3, 1882
287,523 Dynamo or Magneto Electric Machine . . June 3, 1882
365,509 Filament for Incandescent Electric
Lamps. . . . . . . . . . . . . . . . . .June 3 1882
446,668 Electric Are Light . . . . . . . . . . .June 3 1882
543,985 Incandescent Conductor for Electric
Lamps. . . . . . . . . . . . . . . . . June 3, 1882
264,651 Incandescent Electric Lamps. . . . . . June 9, 1882
264,655 Incandescing Electric Lamps. . . . . . June 9, 1882
264,670 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . . June 9, 1882
273,489 Turn-Table for Electric Railway. . . . June 9, 1882
273,490 Electro Magnetic Railway System. . . . June 9, 1882
401,486 System of Electric Lighting. . . . . .June 12, 1882
476,527 System of Electric Lighting. . . . . .June 12, 1882
439,390 Electric Lighting System . . . . . . .June 19, 1882
446,666 System of Electric Lighting. . . . . .June 19, 1882
464,822 System of Distributing Electricity . .June 19, 1882
304,082 Electrical Meter . . . . . . . . . . .June 24, 1882
274,296 Manufacture of Incandescents . . . . . July 5, 1882
264,656 Incandescent Electric Lamp . . . . . . July 7, 1882
265,782 Regulator for Dynamo Electric Machines July 7, 1882
265,783 Regulator for Dynamo Electric Machines July 7, 1882
265,784 Regulator for Dynamo Electric Machines July 7, 1882
265,785 Dynamo Electric Machine. . . . . . . . July 7, 1882
273,494 Electrical Railroad. . . . . . . . . . July 7, 1882
278,418 Translating Electric Currents from High
to Low Tension . . . . . . . . . . . . July 7, 1882
293,435 Electrical Meter . . . . . . . . . . . July 7, 1882
334,853 Mold for Carbonizing . . . . . . . . . July 7, 1882
339,278 Electric Railway . . . . . . . . . . . July 7, 1882
273,714 Magnetic Electric Signalling
Apparatus. . . . . . . . . . . . . . . Aug. 5, 1882
282,287 Magnetic Electric Signalling
Apparatus. . . . . . . . . . . . . . . Aug. 5, 1882
448,778 Electric Railway . . . . . . . . . . . Aug. 5, 1882
439,392 Electric Lighting System . . . . . . .Aug. 12, 1882
271,613 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Aug. 25, 1882
287,518 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Aug. 25, 1882
406,825 Electric Meter . . . . . . . . . . . .Aug. 25, 1882
439,393 Carbonizing Chamber. . . . . . . . . .Aug. 25, 1882
273,487 Regulator for Dynamo Electric Machines Sept. 12, 1882
297,581 Incandescent Electric Lamp . . . . . Sept. 12, 1882
395,962 Manufacturing Electric Lamps . . . . Sept. 16, 1882
287,525 Regulator for Systems of Electrical
Distribution—Edison and C. L.
Clarke . . . . . . . . . . . . . . . . Oct. 4, 1882
365,465 Valve Gear . . . . . . . . . . . . . . Oct. 5, 1882
317,631 Incandescent Electric Lamp . . . . . . Oct. 7, 1882
307,029 Filament for Incandescent Lamp . . . . Oct. 9, 1882
268,206 Incandescing Electric Lamp . . . . . .Oct. 10, 1882
273,486 Incandescing Electric Lamp . . . . . .Oct. 12, 1882
274,293 Electric Lamp. . . . . . . . . . . . .Oct. 14, 1882
275,612 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Oct. 14, 1882
430,932 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Oct. 14, 1882
271,616 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Oct. 16, 1882
543,986 Process for Treating Products Derived
from Vegetable Fibres. . . . . . . . .Oct. 17, 1882
543,987 Filament for Incandescent Lamps. . . .Oct. 17, 1882
271,614 Shafting . . . . . . . . . . . . . . .Oct. 19, 1882
271,615 Governor for Dynamo Electric
Machines . . . . . . . . . . . . . . .Oct. 19, 1882
273,491 Regulator for Driving Engines of
Electrical Generators. . . . . . . . .Oct. 19, 1882
273,493 Valve Gear for Electrical Generator
Engines. . . . . . . . . . . . . . . .Oct. 19, 1882
411,016 Manufacturing Carbon Filaments . . . .Oct. 19, 1882
492,150 Coating Conductors for Incandescent
Lamps. . . . . . . . . . . . . . . . .Oct. 19, 1882
273,485 Incandescent Electric Lamps. . . . . .Oct. 26, 1882
317,632 Incandescent Electric Lamps. . . . . .Oct. 26, 1882
317,633 Incandescent Electric Lamps. . . . . .Oct. 26, 1882
287,520 Incandescing Conductor for Electric
Lamps. . . . . . . . . . . . . . . . . Nov. 3, 1882
353,783 Incandescent Electric Lamp . . . . . . Nov. 3, 1882
430,933 Filament for Incandescent Lamps. . . . Nov. 3, 1882
274,294 Incandescent Electric Lamp . . . . . .Nov. 13, 1882
281,350 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Nov. 13, 1882
274,295 Incandescent Electric Lamp . . . . . .Nov. 14, 1882
276,233 Electrical Generator and Motor . . . .Nov. 14, 1882
274,290 System of Electrical Distribution. . .Nov. 20, 1882
274,291 Mold for Carbonizer. . . . . . . . . .Nov. 28, 1882
278,413 Regulator for Dynamo Electric MachinesNov. 28, 1882
278,414 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Nov. 28, 1882
287,519 Manufacturing Incandescing Electric
Lamps. . . . . . . . . . . . . . . . .Nov. 28, 1882
287,524 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Nov. 28, 1882
438,298 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Nov. 28, 1882
276,232 Operating and Regulating Electrical
Generators . . . . . . . . . . . . . .Dec. 20, 1882
278,415 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Jan. 13, 1883
278,417 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Jan. 13, 1883
281,349 Regulator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Jan. 13, 1883
283,985 System of Electrical Distribution. . . Jan. 13 1883
283,986 System o' Electrical Distribution. . . Jan. 13 1883
459,835 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .Jan. 13, 1883
13,940 Design Patent—Incandescing Electric
Lamp . . . . . . . . . . . . . . . . . Feb. 13 1883
280,727 System of Electrical Distribution. . . Feb. 13 1883
395,123 Circuit Controller for Dynamo Machine.Feb. 13, 1883
287,521 Dynamo or Magneto Electric Machine . .Feb. 17, 1883
287,522 Molds for Carbonizing. . . . . . . . .Feb. 17, 1883
438,299 Manufacture of Carbon Filaments. . . .Feb. 17, 1883
446,669 Manufacture of Filaments for Incandescent
Electric Lamps . . . . . . . . . . . .Feb. 17, 1883
476,528 Incandescent Electric Lamp . . . . . .Feb. 17, 1883
281,351 Electrical Generator . . . . . . . . .March 5, 1883
283,984 System of Electrical Distribution. . .March 5, 1883
287,517 System of Electrical Distribution. . .March 14,1883
283,983 System of Electrical Distribution. . .April 5, 1883
354,310 Manufacture of Carbon Conductors . . .April 6, 1883
370,123 Electric Meter . . . . . . . . . . . .April 6, 1883
411,017 Carbonizing Flask. . . . . . . . . . .April 6, 1883
370,124 Manufacture of Filament for Incandescing
Electric Lamp. . . . . . . . . . . . April 12, 1883
287,516 System of Electrical Distribution. . . .May 8, 1883
341,839 Incandescent Electric Lamp . . . . . . .May 8, 1883
398,774 Incandescent Electric Lamp . . . . . . .May 8, 1883
370,125 Electrical Transmission of Power . . . June 1, 1883
370,126 Electrical Transmission of Power . . . June 1, 1883
370,127 Electrical Transmission of Power . . . June 1, 1883
370,128 Electrical Transmission of Power . . . June 1, 1883
370,129 Electrical Transmission of Power . . . June 1, 1883
370,130 Electrical Transmission of Power . . . June 1, 1883
370,131 Electrical Transmission of Power . . . June 1, 1883
438,300 Gauge for Testing Fibres for
Incandescent Lamp Carbons. . . . . . . June 1, 1883
287,511 Electric Regulator . . . . . . . . . .June 25, 1883
287,512 Dynamo Electric Machine. . . . . . . .June 25, 1883
287,513 Dynamo Electric Machine. . . . . . . .June 25, 1883
287,514 Dynamo Electric Machine. . . . . . . .June 25, 1883
287,515 System of Electrical Distribution. . .June 25, 1883
297,582 Dynamo Electric Machine. . . . . . . .June 25, 1883
328,572 Commutator for Dynamo Electric Machines June 25, 1883
430,934 Electric Lighting System . . . . . . .June 25, 1883
438,301 System of Electric Lighting. . . . . .June 25, 1883
297,583 Dynamo Electric Machines . . . . . . .July 27, 1883
304,083 Dynamo Electric Machines . . . . . . .July 27; 1883
304,084 Device for Protecting Electric Light
Systems from Lightning . . . . . . . .July 27, 1883
438,302 Commutator for Dynamo Electric
Machine. . . . . . . . . . . . . . . .July 27, 1883
476,529 System of Electrical Distribution. . .July 27, 1883
297,584 Dynamo Electric Machine. . . . . . . . Aug. 8, 1883
307,030 Electrical Meter . . . . . . . . . . . Aug. 8, 1883
297,585 Incandescing Conductor for Electric
Lamps. . . . . . . . . . . . . . . . Sept. 14, 1883
297,586 Electrical Conductor . . . . . . . . Sept. 14, 1883
435,688 Process and Apparatus for Generating
Electricity. . . . . . . . . . . . . Sept. 14, 1883
470,922 Manufacture of Filaments for
Incandescent Lamps . . . . . . . . . Sept. 14, 1883
490,953 Generating Electricity . . . . . . . . Oct. 9, 1883
293,432 Electrical Generator or Motor. . . . .Oct. 17, 1883
307,031 Electrical Indicator . . . . . . . . . Nov. 2, 1883
337,254 Telephone—Edison and Bergmann . . . .Nov. 10, 1883
297,587 Dynamo Electric Machine. . . . . . . .Nov. 16, 1883
298,954 Dynamo Electric Machine. . . . . . . .Nov. 15, 1883
298,955 Dynamo Electric Machine. . . . . . . .Nov. 15, 1883
304,085 System of Electrical Distribution. . .Nov. 15, 1883
509,517 System of Electrical Distribution. . .Nov. 15, 1883
425,761 Incandescent Lamp. . . . . . . . . . .Nov. 20, 1883
304,086 Incandescent Electric Lamp . . . . . .Dec. 15, 1883
298,956 Operating Dynamo Electric Machine. . . Jan. 5, 1884
304,087 Electrical Conductor . . . . . . . . .Jan. 12, 1884
395,963 Incandescent Lamp Filament . . . . . .Jan. 22, 1884
526,147 Plating One Material with Another. . .Jan. 22, 1884
339,279 System of Electrical Distribution. . . Feb. 8, 1884
314,115 Chemical Stock Quotation Telegraph—
Edison and Kenny . . . . . . . . . . . Feb. 9, 1884
436,968 Method and Apparatus for Drawing
Wire . . . . . . . . . . . . . . . . . June 2, 1884
436,969 Apparatus for Drawing Wire . . . . . . June 2, 1884
438,303 Arc Lamp . . . . . . . . . . . . . . . June 2, 1884
343,017 System of Electrical Distribution. . .June 27, 1884
391,595 System of Electric Lighting. . . . . .July 16, 1884
328,573 System of Electric Lighting. . . . . Sept. 12, 1884
328,574 System of Electric Lighting. . . . . Sept. 12, 1884
328,575 System of Electric Lighting. . . . . Sept. 12, 1884
391,596 Incandescent Electric Lamp . . . . . Sept. 24, 1884
438,304 Electric Signalling Apparatus. . . . Sept. 24, 1884
422,577 Apparatus for Speaking Telephones—
Edison and Gilliland . . . . . . . . .Oct. 21, 1884
329,030 Telephone. . . . . . . . . . . . . . . Dec. 3, 1884
422,578 Telephone Repeater . . . . . . . . . . Dec. 9, 1884
422,579 Telephone Repeater . . . . . . . . . . Dec. 9, 1884
340,707 Telephonic Repeater. . . . . . . . . . Dec. 9, 1884
340,708 Electrical Signalling Apparatus. . . .Dec. 19, 1884
347,097 Electrical Signalling Apparatus. . . .Dec. 19, 1884
478,743 Telephone Repeater . . . . . . . . . .Dec. 31, 1884
340,709 Telephone Circuit—Edison and
Gilliland. . . . . . . . . . . . . . . Jan. 2, 1885
378,044 Telephone Transmitter. . . . . . . . . Jan. 9, 1885
348,114 Electrode for Telephone Transmitters .Jan. 12, 1885
438,305 Fuse Block . . . . . . . . . . . . . .Jan. 14, 1885
350,234 System of Railway Signalling—Edison
and Gilliland. . . . . . . . . . . . .March 27,1885
486,634 System of Railway Signalling—Edison
and Gilliland. . . . . . . . . . . . .March 27,1885
333,289 Telegraphy . . . . . . . . . . . . . April 27, 1885
333,290 Duplex Telegraphy. . . . . . . . . . April 30, 1885
333,291 Way Station Quadruplex Telegraph . . . .May 6, 1885
465,971 Means for Transmitting Signals Electrically May 14, 1885
422 072 Telegraphy . . . . . . . . . . . . . . Oct. 7, 1885
437 422 Telegraphy . . . . . . . . . . . . . . Oct. 7, 1885
422,073 Telegraphy . . . . . . . . . . . . . Nov. I 2, 1885
422,074 Telegraphy . . . . . . . . . . . . . .Nov. 24, 1885
435,689 Telegraphy . . . . . . . . . . . . . .Nov. 30, 1885
438,306 Telephone - Edison and Gilliland . . .Dec. 22, 1885
350,235 Railway Telegraphy—Edison and
Gilliland. . . . . . . . . . . . . . .Dec. 28, 1885
406,567 Telephone. . . . . . . . . . . . . . .Jan. 28, 1886
474,232 Speaking Telegraph . . . . . . . . . .Feb. 17, 1886
370 132 Telegraphy . . . . . . . . . . . . . . May 11, 1886
411,018 Manufacture of Incandescent Lamps. . .July 15, 1886
438,307 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . July I 5, 1886
448,779 Telegraph. . . . . . . . . . . . . . .July IS, 1886
411,019 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . .July 20, 1886
406,130 Manufacture of Incandescent Electric
Lamps. . . . . . . . . . . . . . . . . Aug. 6, 1886
351,856 Incandescent Electric Lamp . . . . . Sept. 30, 1886
454,262 Incandescent Lamp Filaments. . . . . .Oct. 26, 1886
466,400 Cut-Out for Incandescent Lamps—Edison
and J. F. Ott. . . . . . . . . . . . .Oct. 26, 1886
484,184 Manufacture of Carbon Filaments. . . .Oct. 26, 1886
490,954 Manufacture of Carbon Filaments for
Electric Lamps . . . . . . . . . . . . Nov. 2, 1886
438,308 System of Electrical Distribution. . . Nov. 9, 1886
524,378 System of Electrical Distribution. . . Nov. 9, 1886
365,978 System of Electrical Distribution. . .Nov. 22, 1886
369 439 System of Electrical Distribution. . .Nov. 22, 1886
384 830 Railway Signalling—Edison and Gilliland Nov. 24, 1886
379,944 Commutator for Dynamo Electric MachinesNov. 26, 1886
411,020 Manufacture of Carbon Filaments. . . .Nov. 26, 1886
485,616 Manufacture of Carbon Filaments. . . . .Dec 6, 1886
485,615 Manufacture of Carbon Filaments. . . . .Dec 6, 1886
525,007 Manufacture of Carbon Filaments. . . . Dec. 6, 1886
369,441 System of Electrical Distribution. . .Dec. 10, 1886
369,442 System of Electrical Distribution. . .Dec. 16, 1886
369,443 System of Electrical Distribution. . .Dec. 16, 1886
484,185 Manufacture of Carbon Filaments. . . .Dec. 20, 1886
534,207 Manufacture of Carbon Filaments. . . .Dec. 20, 1886
373,584 Dynamo Electric Machine. . . . . . . .Dec. 21, 1886
468,949 Converter System for Electric
Railways . . . . . . . . . . . . . . . Feb. 7, 1887
380,100 Pyromagnetic Motor . . . . . . . . . . May 24, 1887
476,983 Pyromagnetic Generator . . . . . . . . .May 24 1887
476,530 Incandescent Electric Lamp . . . . . . June 1, 1887
377,518 Magnetic Separator . . . . . . . . . .June 30, 1887
470,923 Railway Signalling . . . . . . . . . . Aug. 9, 1887
545,405 System of Electrical Distribution. . .Aug. 26, 1887
380,101 System of Electrical Distribution. . .Sept. 13 1887
380,102 System of Electrical Distribution. . .Sept. 14 1887
470,924 Electric Conductor . . . . . . . . . Sept. 26, 1887
563,462 Method of and Apparatus for Drawing
Wire . . . . . . . . . . . . . . . . .Oct. 17, 1887
385,173 System of Electrical Distribution. . . Nov. 5, 1887
506,215 Making Plate Glass . . . . . . . . . . Nov. 9, 1887
382,414 Burnishing Attachments for PhonographsNov. 22, 1887
386,974 Phonograph . . . . . . . . . . . . . .Nov. 22, 1887
430,570 Phonogram Blank. . . . . . . . . . . .Nov. 22, 1887
382,416 Feed and Return Mechanism for PhonographsNov. 29, 1887
382,415 System of Electrical Distribution. . . Dec. 4, 1887
382,462 Phonogram Blanks . . . . . . . . . . . Dec. 5, 1887
484,582 Duplicating Phonograms . . . . . . . .Jan. 17, 1888
434,586 Electric Generator . . . . . . . . . .Jan. 21, 1888
434,587 Thermo Electric Battery. . . . . . . .Jan. 21, 1888
382,417 Making Phonogram Blanks. . . . . . . .Jan. 30, 1888
389,369 Incandescing Electric Lamp . . . . . . Feb. 2, 1888
382,418 Phonogram Blank. . . . . . . . . . . .Feb. 20, 1888
390,462 Making Carbon Filaments. . . . . . . .Feb. 20, 1888
394,105 Phonograph Recorder. . . . . . . . . .Feb. 20, 1888
394,106 Phonograph Reproducer. . . . . . . . .Feb. 20, 1888
382,419 Duplicating Phonograms . . . . . . . .March 3, 1888
425,762 Cut-Out for Incandescent Lamps . . . .March 3, 1888
396,356 Magnetic Separator . . . . . . . . . .March 19,1888
393,462 Making Phonogram Blanks. . . . . . . April 28, 1888
393,463 Machine for Making Phonogram Blanks. April 28, 1888
393,464 Machine for Making Phonogram Blanks. April 28, 1888
534,208 Induction Converter. . . . . . . . . . .May 7, 1888
476,991 Method of and Apparatus for Separating
Ores . . . . . . . . . . . . . . . . . .May 9, 1888
400,646 Phonograph Recorder and Reproducer . . May 22, 1888
488,190 Phonograph Reproducer. . . . . . . . . May 22, 1888
488,189 Phonograph . . . . . . . . . . . . . . May 26, 1888
470,925 Manufacture of Filaments for Incandescent
Electric Lamps . . . . . . . . . . . .June 21, 1888
393,465 Preparing Phonograph Recording Surfaces June 30, 1888
400,647 Phonograph . . . . . . . . . . . . . .June 30, 1888
448,780 Device for Turning Off Phonogram Blanks June 30, 1888
393,466 Phonograph Recorder. . . . . . . . . .July 14, 1888
393,966 Recording and Reproducing Sounds . . .July 14, 1888
393,967 Recording and Reproducing Sounds . . .July 14, 1888
430,274 Phonogram Blank. . . . . . . . . . . .July 14, 1888
437,423 Phonograph . . . . . . . . . . . . . .July 14, 1888
450,740 Phonograph Recorder. . . . . . . . . .July 14, 1888
485,617 Incandescent Lamp Filament . . . . . .July 14, 1888
448,781 Turning-Off Device for Phonographs . .July 16, 1888
400,648 Phonogram Blank. . . . . . . . . . . .July 27, 1888
499,879 Phonograph . . . . . . . . . . . . . .July 27, 1888
397,705 Winding Field Magnets. . . . . . . . .Aug. 31, 1888
435,690 Making Armatures for Dynamo Electric
Machines . . . . . . . . . . . . . . .Aug. 31, 1888
430,275 Magnetic Separator . . . . . . . . . Sept. 12, 1888
474,591 Extracting Gold from Sulphide Ores . Sept. 12, 1888
397,280 Phonograph Recorder and Reproducer . Sept. 19, 1888
397,706 Phonograph . . . . . . . . . . . . . Sept. 29, 1888
400,649 Making Phonogram Blanks. . . . . . . Sept. 29, 1888
400,650 Making Phonogram Blanks. . . . . . . .Oct. 15, 1888
406,568 Phonograph . . . . . . . . . . . . . .Oct. 15, 1888
437,424 Phonograph . . . . . . . . . . . . . .Oct. 15, 1888
393,968 Phonograph Recorder. . . . . . . . . .Oct. 31, 1888
406,569 Phonogram Blank. . . . . . . . . . . .Jan. 10, 1889
488,191 Phonogram Blank. . . . . . . . . . . .Jan. 10, 1889
430,276 Phonograph . . . . . . . . . . . . . .Jan. 12, 1889
406,570 Phonograph . . . . . . . . . . . . . . Feb. 1, 1889
406,571 Treating Phonogram Blanks. . . . . . . Feb. 1, 1889
406,572 Automatic Determining Device for
Phonographs. . . . . . . . . . . . . . Feb. 1, 1889
406,573 Automatic Determining Device for
Phonographs. . . . . . . . . . . . . . Feb. 1, 1889
406,574 Automatic Determining Device for
Phonographs. . . . . . . . . . . . . . Feb. 1, 1889
406,575 Automatic Determining Device for
Phonographs. . . . . . . . . . . . . . Feb. 1, 1889
406,576 Phonogram Blank. . . . . . . . . . . . Feb. 1, 1889
430,277 Automatic Determining Device for
Phonographs. . . . . . . . . . . . . . Feb. 1, 1889
437,425 Phonograph Recorder. . . . . . . . . . Feb. 1, 1889
414,759 Phonogram Blanks . . . . . . . . . . March 22, 1889
414,760 Phonograph . . . . . . . . . . . . . March 22, 1889
462,540 Incandescent Electric Lamps. . . . . March 22, 1889
430,278 Phonograph . . . . . . . . . . . . . .April 8, 1889
438,309 Insulating Electrical Conductors . . April 25, 1889
423,039 Phonograph Doll or Other Toys. . . . .June 15, 1889
426,527 Automatic Determining Device for
Phonographs. . . . . . . . . . . . . .June 15, 1889
430,279 Voltaic Battery. . . . . . . . . . . .June 15, 1889
506,216 Apparatus for Making Glass . . . . . .June 29, 1889
414,761 Phonogram Blanks . . . . . . . . . . .July 16, 1889
430,280 Magnetic Separator . . . . . . . . . .July 20, 1889
437,426 Phonograph . . . . . . . . . . . . . .July 20, 1889
465,972 Phonograph . . . . . . . . . . . . . .Nov. 14, 1889
443,507 Phonograph . . . . . . . . . . . . . . Dec. 11 1889
513,095 Phonograph . . . . . . . . . . . . . . Dec. 11 1889
434,588 Magnetic Ore Separator—Edison and
W. K. L. Dickson . . . . . . . . . . .Jan. 16, 1890
437,427 Making Phonogram Blanks. . . . . . . . Feb. 8, 1890
465,250 Extracting Copper Pyrites. . . . . . . Feb. 8, 1890
434,589 Propelling Mechanism for Electric Vehicles Feb. 14, 1890
438,310 Lamp Base. . . . . . . . . . . . . . April 25, 1890
437,428 Propelling Device for Electric Cars. April 29, 1890
437,429 Phonogram Blank. . . . . . . . . . . April 29, 1890
454,941 Phonograph Recorder and Reproducer . . .May 6, 1890
436,127 Electric Motor . . . . . . . . . . . . May 17, 1890
484,583 Phonograph Cutting Tool. . . . . . . . May 24, 1890
484,584 Phonograph Reproducer. . . . . . . . . May 24, 1890
436,970 Apparatus for Transmitting Power . . . June 2, 1890
453,741 Phonograph . . . . . . . . . . . . . . July 5, 1890
454,942 Phonograph . . . . . . . . . . . . . . July 5, 1890
456,301 Phonograph Doll. . . . . . . . . . . . July 5, 1890
484,585 Phonograph . . . . . . . . . . . . . . July 5, 1890
456,302 Phonograph . . . . . . . . . . . . . . Aug. 4, 1890
476,984 Expansible Pulley. . . . . . . . . . . Aug. 9, 1890
493,858 Transmission of Power. . . . . . . . . Aug. 9, 1890
457,343 Magnetic Belting . . . . . . . . . . .Sept. 6, 1890
444,530 Leading-in Wires for Incandescent Electric
Lamps (reissued October 10, 1905,
No. 12,393). . . . . . . . . . . . . Sept. 12, 1890
534 209 Incandescent Electric Lamp . . . . . Sept. 13, 1890
476 985 Trolley for Electric Railways. . . . .Oct. 27, 1890
500,280 Phonograph . . . . . . . . . . . . . .Oct. 27, 1890
541,923 Phonograph . . . . . . . . . . . . . .Oct. 27, 1890
457,344 Smoothing Tool for Phonogram
Blanks . . . . . . . . . . . . . . . .Nov. 17, 1890
460,123 Phonogram Blank Carrier. . . . . . . .Nov. 17, 1890
500,281 Phonograph . . . . . . . . . . . . . .Nov. 17, 1890
541,924 Phonograph . . . . . . . . . . . . . .Nov. 17, 1890
500,282 Phonograph . . . . . . . . . . . . . . Dec. 1, 1890
575,151 Phonograph . . . . . . . . . . . . . . Dec. 1, 1890
605,667 Phonograph . . . . . . . . . . . . . . Dec. 1, 1890
610,706 Phonograph . . . . . . . . . . . . . . Dec. 1, 1890
622,843 Phonograph . . . . . . . . . . . . . . Dec. 1, 1890
609,268 Phonograph . . . . . . . . . . . . . . Dec. 6, 1890
493,425 Electric Locomotive. . . . . . . . . .Dec. 20, 1890
476,992 Incandescent Electric Lamp . . . . . .Jan. 20, 1891
470,926 Dynamo Electric Machine or Motor . . . Feb. 4, 1891
496,191 Phonograph . . . . . . . . . . . . . . Feb. 4, 1891
476,986 Means for Propelling Electric Cars . .Feb. 24, 1891
476,987 Electric Locomotive. . . . . . . . . .Feb. 24, 1891
465,973 Armatures for Dynamos or Motors. . . .March 4, 1891
470,927 Driving Mechanism for Cars . . . . . .March 4, 1891
465,970 Armature Connection for Motors or
Generators . . . . . . . . . . . . . March 20, 1891
468,950 Commutator Brush for Electric Motors
and Dynamos. . . . . . . . . . . . . March 20, 1891
475,491 Electric Locomotive. . . . . . . . . . June 3, 1891
475,492 Electric Locomotive. . . . . . . . . . June 3, 1891
475,493 Electric Locomotive. . . . . . . . . . June 3, 1891
475,494 Electric Railway . . . . . . . . . . . June 3, 1891
463,251 Bricking Fine Ores . . . . . . . . . .July 31, 1891
470,928 Alternating Current Generator. . . . .July 31, 1891
476,988 Lightning Arrester . . . . . . . . . .July 31, 1891
476,989 Conductor for Electric Railways. . . .July 31, 1891
476,990 Electric Meter . . . . . . . . . . . .July 31, 1891
476,993 Electric Arc . . . . . . . . . . . . .July 31, 1891
484,183 Electrical Depositing Meter. . . . . .July 31, 1891
485,840 Bricking Fine Iron Ores. . . . . . . .July 31, 1891
493,426 Apparatus for Exhibiting Photographs
of Moving Objects. . . . . . . . . . .July 31, 1891
509,518 Electric Railway . . . . . . . . . . .July 31, 1891
589,168 Kinetographic Camera (reissued September
30, 1902, numbered 12,037
and 12,038, and January 12, 1904,
numbered 12,192) . . . . . . . . . . .July 31, 1891
470,929 Magnetic Separator . . . . . . . . . .Aug. 28, 1891
471,268 Ore Conveyor and Method of Arranging
Ore Thereon. . . . . . . . . . . . . .Aug. 28, 1891
472,288 Dust-Proof Bearings for Shafts . . . .Aug. 28, 1891
472,752 Dust-Proof Journal Bearings. . . . . .Aug. 28, 1891
472,753 Ore-Screening Apparatus. . . . . . . .Aug. 28, 1891
474,592 Ore-Conveying Apparatus. . . . . . . .Aug. 28, 1891
474,593 Dust-Proof Swivel Shaft Bearing. . . .Aug. 28, 1891
498,385 Rollers for Ore-Crushing or Other
Material . . . . . . . . . . . . . . .Aug. 28, 1891
470,930 Dynamo Electric Machine. . . . . . . . .Oct 8, 1891
476,532 Ore-Screening Apparatus. . . . . . . . .Oct 8, 1891
491,992 Cut-Out for Incandescent Electric Lamps Nov. 10, 1891
491,993 Stop Device. . . . . . . . . . . . . . April 5 1892
564,423 Separating Ores. . . . . . . . . . . .June 2;, 1892
485,842 Magnetic Ore Separation. . . . . . . . July 9, 1892
485,841 Mechanically Separating Ores . . . . . July 9, 1892
513,096 Method of and Apparatus for Mixing
Materials. . . . . . . . . . . . . . .Aug. 24, 1892
509,428 Composition Brick and Making Same. . March 15, 1893
513,097 Phonograph . . . . . . . . . . . . . . May 22, 1893
567,187 Crushing Rolls . . . . . . . . . . . .Dec. 13, 1893
602 064 Conveyor . . . . . . . . . . . . . . .Dec. 13, 1893
534 206 Filament for Incandescent Lamps. . . .Dec. 15, 1893
865,367 Fluorescent Electric Lamp. . . . . . . May 16, 1896
604.740 Governor for Motors. . . . . . . . . .Jan. 25, 1897
607,588 Phonograph . . . . . . . . . . . . . .Jan. 25, 1897
637,327 Rolls. . . . . . . . . . . . . . . . . May 14, 1897
672,616 Breaking Rock. . . . . . . . . . . . . May 14, 1897
675,056 Magnetic Separator . . . . . . . . . . May 14, 1897
676,618 Magnetic Separator . . . . . . . . . . May 14, 1897
605,475 Drying Apparatus . . . . . . . . . . .June 10, 1897
605,668 Mixer. . . . . . . . . . . . . . . . .June 10, 1897
667,201 Flight Conveyor. . . . . . . . . . . .June 10, 1897
671,314 Lubricating Journal Bearings . . . . .June 10, 1897
671,315 Conveyor . . . . . . . . . . . . . . .June 10, 1897
675,057 Screening Pulverized Material. . . . .June 10, 1897
713,209 Duplicating Phonograms . . . . . . . .Feb. 21, 1898
703,774 Reproducer for Phonographs . . . . . March 21, 1898
626,460 Filament for Incandescent Lamps and
Manufacturing Same . . . . . . . . . .March 29,1898
648,933 Dryer. . . . . . . . . . . . . . . . April 11, 1898
661,238 Machine for Forming Pulverized
Material in Briquettes . . . . . . . April 11, 1898
674,057 Crushing Rolls . . . . . . . . . . . April 11, 1898
703,562 Apparatus for Bricking Pulverized Material April 11, 1898
704,010 Apparatus for Concentrating Magnetic
Iron Ores. . . . . . . . . . . . . . April 11, 1898
659,389 Electric Meter . . . . . . . . . . . Sept. 19, 1898
648,934 Screening or Sizing Very Fine Materials Feb. 6, 1899
663,015 Electric Meter . . . . . . . . . . . . Feb. 6, 1899
688,610 Phonographic Recording Apparatus . . .Feb. 10, 1899
643,764 Reheating Compressed Air for
Industrial Purposes. . . . . . . . . .Feb. 24, 1899
660,293 Electric Meter . . . . . . . . . . . .March 23,1899
641,281 Expanding Pulley—Edison and Johnson .March 28,1899
727,116 Grinding Rolls . . . . . . . . . . . .June 15, 1899
652,457 Phonograph (reissued September 25,
1900, numbered 11,857) . . . . . . . Sept. 12, 1899
648,935 Apparatus for Duplicating Phonograph
Records. . . . . . . . . . . . . . . .Oct. 27, 1899
685,911 Apparatus for Reheating Compressed
Air for Industrial Purposes. . . . . .Nov. 24, 1899
657,922 Apparatus for Reheating Compressed
Air for Industrial Purposes. . . . . . Dec. 9, 1899
676,840 Magnetic Separating Apparatus. . . . . Jan. 3, 1900
660,845 Apparatus for Sampling, Averaging,
Mixing, and Storing Materials in Bulk Jan. 9, 1900
662,063 Process of Sampling, Averaging, Mixing,
and Storing Materials in Bulk. . . . . Jan. 9, 1900
679,500 Apparatus for Screening Fine Materials Jan. 24, 1900
671,316 Apparatus for Screening Fine Materials Feb. 23, 1900
671,317 Apparatus for Screening Fine Materials March 28, 1900
759,356 Burning Portland Cement Clinker, etc April 10, 1900
759,357 Apparatus for Burning Portland Cement
Clinker, etc . . . . . . . . . . . . .April 10 1900
655,480 Phonographic Reproducing Device. . . .April 30 1900
657,527 Making Metallic Phonograph Records . April 30, 1900
667,202 Duplicating Phonograph Records . . . April 30, 1900
667,662 Duplicating Phonograph Records . . . April 30, 1900
713,863 Coating Phonograph Records . . . . . . May IS, 1900
676,841 Magnetic Separating Apparatus. . . . . June 11 1900
759,358 Magnetic Separating Apparatus. . . . . June 11 1900
680,520 Phonograph Records . . . . . . . . . .July 23, 1900
672,617 Apparatus for Breaking Rock. . . . . . Aug. 1, 1900
676,225 Phonographic Recording Apparatus . . .Aug. 10, 1900
703,051 Electric Meter . . . . . . . . . . . Sept. 28, 1900
684,204 Reversible Galvanic Battery. . . . . . Oct. IS 1900
871,214 Reversible Galvanic Battery. . . . . . Oct. IS 1900
704,303 Reversible Galvanic Battery. . . . . .Dec. 22, 1900
700,136 Reversible Galvanic Battery. . . . . . Feb. 18 1901
700,137 Reversible Galvanic Battery. . . . . . Feb. 23 1901
704,304 Reversible Galvanic Battery. . . . . .Feb. 23, 1901
704,305 Reversible Galvanic Battery. . . . . . May 10, 1901
678,722 Reversible Galvanic Battery. . . . . .June 17, 1901
684,205 Reversible Galvanic Battery. . . . . .June 17, 1901
692,507 Reversible Galvanic Battery. . . . . .June 17, 1901
701,804 Reversible Galvanic Battery. . . . . .June 17, 1901
704,306 Reversible Galvanic Battery. . . . . .June 17, 1901
705,829 Reproducer for Sound Records . . . . .Oct. 24, 1901
831,606 Sound Recording Apparatus. . . . . . .Oct. 24, 1901
827,089 Calcining Furnaces . . . . . . . . . .Dec. 24, 1901