Edison's U.S. Patents, 293,432-431,018

This list contains the patents Edison received between January 1884 and June 1890. It is arranged in chronological order by issue date, the time at which the patent, having passed inspection and any legal challenges, was awarded. The execution date is the date on which Edison signed the application and the date in the patenting process that comes closest to the time of actual inventive activity; the application date is the date on which the Patent Office received and recorded the application. The number in the first column indicates the order of the patents' execution.

90,646-242,901	248,416-288,318	293,432-431,018	434,585-610,706	622,843-976,792	991,433-1,908,830
1868-June 1881	July 1881-Dec. 1883	Jan. 1884-June 1890	July 1890-Dec. 1898	1899-1910	1911-1931

No.	Executed	Applied	Issued	PatentNo.	Title
481.	10/17/83	10/18/83	02/12/84	293,432	Electrical Generator or Motor
198.	08/06/80	08/09/80	02/12/84	293,433	Insulation of Railroad-Tracks Used for Electrical Circuits
314.	12/05/81	08/07/82	02/12/84	293,434	Incandescent Electric Lamp
378.	07/07/82	08/14/82	02/12/84	293,435	Electrical Meter
155.	12/04/78	12/09/78	04/01/84	295,990	Type-Writer
306.	11/07/81	11/28/81	04/29/84	297,580	Electric-Arc Light
390.	09/12/82	09/22/82	04/29/84	297,581	Incandescent Electric Lamp
465.	06/25/83	06/29/83	04/29/84	297,582	Dynamo-Electric Machine
469.	07/27/83	10/10/83	04/29/84	297,583	Dynamo-Electric Machine
474.	08/08/83	10/10/83	04/29/84	297,584	Dynamo-Electric Machine
477.	09/14/83	10/10/83	04/29/84	297,585	Incandescing Conductor for Electric Lamps
478.	09/14/83	10/10/83	04/29/84	297,586	Electrical Conductor
484.	11/15/83	12/12/83	04/29/84	297,587	Dynamo-Electric Machine
184.	06/15/80	07/03/80	05/13/84	298,679	Method of Treating Carbons for Electric Lights
485.	11/15/83	12/12/83	05/20/84	298,954	Dynamo-Electric Machine
486.	11/15/83	12/12/83	05/20/84	298,955	Dynamo-Electric Machine
492.	01/05/84	01/24/84	05/20/84	298,956	Mode of Operating Dynamo-Electric Machines
369.	06/24/82	08/14/82	08/26/84	304,082	Electrical Meter
470.	07/27/83	10/10/83	08/26/84	304,083	Dynamo-Electric Machine
471.	07/27/83	10/10/83	08/26/84	304,084	Device for Protecting Electric-Light Systems from Lightning
487.	11/15/83	12/12/83	08/26/84	304,085	System of Electrical Distribution
491.	12/15/83	01/24/84	08/26/84	304,086	Incandescent Electric Lamp
493.	01/12/84	01/24/84	08/26/84	304,087	Electrical Conductor
394.	10/09/82	10/12/82	10/21/84	307,029	Filament for Incandescent Lamps
475.	08/08/83	10/10/83	10/21/84	307,030	Electrical Meter
482.	11/02/83	11/15/83	10/21/84	307,031	Electrical Indicator
497.	02/09/84	03/19/84	03/17/85	314,115	Chemical Stock Quotation Telegraph
308.	11/22/81	11/29/81	05/12/85	317,631	Incandescent Electric Lamp
410.	10/26/82	11/09/82	05/12/85	317,632	Incandescent Electric Lamp
411.	10/26/82	11/09/82	05/12/85	317,633	Incandescent Electric Lamp
466.	06/25/83	06/29/83	10/20/85	328,572	Commutator for Dynamo-Electric Machines
503.	09/12/84	10/02/84	10/20/85	328,573	System of Electric Lighting
504.	09/12/84	10/02/84	10/20/85	328,574	System of Electric Lighting
505.	09/12/84	10/02/84	10/20/85	328,575	System of Electric Lighting
509.	12/03/84	12/15/84	10/27/85	329,030	Telephone
522.	04/27/85	05/08/85	12/29/85	333,289	Telegraphy
523.	04/30/85	05/08/85	12/29/85	333,290	Duplex Telegraphy
524.	05/06/85	05/16/85	12/29/85	333,291	Way-Station Quadruplex Telegraphy
379.	07/07/82	08/14/82	01/26/86	334,853	Mold for Carbonizing
483.	11/10/83	11/13/83	03/02/86	337,254	Telephone
380.	07/07/82	08/14/82	04/06/86	339,278	Electric Railway
496.	02/08/84	04/05/84	04/06/86	339,279	System of Electrical Distribution
510.	12/09/84	12/15/84	04/27/86	340,707	Telephonic Repeater
513.	12/19/84	01/12/85	04/27/86	340,708	Electrical Signaling Apparatus
516.	01/02/85	10/14/85	04/27/86	340,709	Telephone-Circuit
261.	05/20/81	05/31/81	05/11/86	341,644	Incandescent Electric Lamp
450.	05/08/83	05/14/83	05/11/86	341,839	Incandescing Electric Lamp
501.	06/27/84	08/07/84	06/01/86	343,017	System of Electrical Distribution
514.	12/19/84	01/12/85	08/10/86	347,097	Electrical Signaling Apparatus
518.	01/12/85	10/14/85	08/24/86	348,114	Electrode for Telephone-Transmitters
520.	03/27/85	04/07/85	10/05/86	350,234	System of Railway Signaling
532.	12/28/85	01/13/86	10/05/86	350,235	Railway-Telegraphy
204.	08/11/80	08/27/80	11/02/86	351,855	Electric Lamp
541.	09/30/86	10/05/86	11/02/86	351,856	Incandescent Electric Lamp
413.	11/03/82	11/09/82	12/07/86	353,783	Incandescent Electric Lamp
445.	04/06/83	04/17/83	12/14/86	354,310	Manufacture of Carbon Conductors
302.	10/29/81	11/28/81	03/01/87	358,599	Incandescent Electric Lamp
318.	12/13/81	08/07/82	03/01/87	358,600	Incandescing Electric Lamp
393.	10/05/82	10/12/82	06/28/87	365,465	Valve-Gear
354.	06/03/82	08/07/82	06/28/87	365,509	Filament for Incandescent Electric Lamps
548.	11/22/86	11/29/86	07/05/87	365,978	System of Electrical Distribution
173.	01/28/80	02/05/80	08/30/87	369,280	System of Electrical Distribution
549.	11/22/86	12/06/86	09/06/87	369,439	System of Electrical Distribution
556.	12/10/86	12/16/86	09/06/87	369,441	System of Electrical Distribution
557.	12/16/86	12/22/86	09/06/87	369,442	System of Electrical Distribution
558.	12/16/86	12/27/86	09/06/87	369,443	System of Electrical Distribution
446.	04/06/83	04/17/83	09/20/87	370,123	Electric Meter
448.	04/12/83	04/20/83	09/20/87	370,124	Manufacture of Filaments for Incandescing Electric Lights
452.	06/01/83	06/07/83	09/20/87	370,125	Electrical Transmission of Power
453.	06/01/83	06/07/83	09/20/87	370,126	Electrical Transmission of Power
454.	06/01/83	06/07/83	09/20/87	370,127	Electrical Transmission of Power
455.	06/01/83	06/07/83	09/20/87	370,128	Electrical Transmission of Power
456.	06/01/83	06/07/83	09/20/87	370,129	Electrical Transmission of Power
457.	06/01/83	06/07/83	09/20/87	370,130	Electrical Transmission of Power
458.	06/01/83	06/07/83	09/20/87	370,131	Electrical Transmission of Power
535.	05/11/86	05/15/86	09/20/87	370,132	Telegraphy
561.	12/21/86	12/28/86	11/22/87	373,584	Dynamo-Electric Machine
130.	05/08/77	05/14/77	02/07/88	377,374	Telegraphy
566.	06/30/87	07/06/87	02/07/88	377,518	Magnetic Separator
517.	01/09/85	10/14/85	02/14/88	378,044	Telephone-Transmitter
312.	12/05/81	12/09/81	03/20/88	379,770	Incandescent Electric Lamp
335.	02/28/82	08/07/82	03/20/88	379,771	Regulator for Dynamo-Electric Machines
352.	05/22/82	08/07/82	03/20/88	379,772	System of Electrical Distribution
551.	11/26/86	12/06/86	03/27/88	379,944	Commutator for Dynamo-Electric Machines
563.	05/24/87	06/13/87	03/27/88	380,100	Pyromagnetic Motor
569.	09/13/87	09/23/87	03/27/88	380,101	System of Electrical Distribution
570.	09/14/87	09/23/87	03/27/88	380,102	System of Electrical Distribution
575.	11/22/87	11/26/87	05/08/88	382,414	Burnishing Attachment for Phonographs
579.	12/04/87	12/27/87	05/08/88	382,415	System of Electrical Distribution
578.	11/29/87	01/05/88	05/08/88	382,416	Feed and Return Mechanism for Phonographs
584.	01/30/88	02/04/88	05/08/88	382,417	Process of Making Phonogram-Blanks
586.	02/20/88	03/02/88	05/08/88	382,418	Phonogram-Blank
590.	03/03/88	03/08/88	05/08/88	382,419	Process of Duplicating Phonograms
580.	12/05/87	01/05/88	05/08/88	382,462	Phonogram-Blank
550.	11/24/86	11/29/86	06/19/88	384,830	Railway Signaling
573.	11/05/87	12/09/87	06/26/88	385,173	System of Electrical Distribution
576.	11/22/87	11/26/87	07/31/88	386,974	Phonograph
585.	02/02/88	02/06/88	09/11/88	389,369	Incandescing Electric Lamp
587.	02/20/88	03/02/88	10/02/88	390,462	Process of Making Carbon Filaments
502.	07/16/84	08/07/84	10/23/88	391,595	System of Electric Lighting
506.	09/24/84	10/02/84	10/23/88	391,596	Incandescent Electric Lamp
593.	04/28/88	05/07/88	11/27/88	393,462	Process of Making Phonogram-Blanks
594.	04/28/88	05/07/88	11/27/88	393,463	Machine for Making Phonogram-Blanks
595.	04/28/88	05/07/88	11/27/88	393,464	Machine for Making Phonogram-Blanks
602.	06/30/88	07/07/88	11/27/88	393,465	Method of Preparing Phonograph Recording-Surfaces
605.	07/14/88	07/17/88	11/27/88	393,466	Phonograph-Recorder
606.	07/14/88	07/17/88	12/04/88	393,966	Method of Recording and Reproducing Sounds
607.	07/14/88	07/17/88	12/04/88	393,967	Method of Recording and Reproducing Sounds
625.	10/31/88	11/05/88	12/04/88	393,968	Phonograph-Recorder
588.	02/20/88	03/02/88	12/04/88	394,105	Phonograph-Recorder
589.	02/20/88	03/02/88	12/04/88	394,106	Phonograph-Reproducer
435.	02/13/83	03/16/83	12/25/88	395,123	Circuit-Controller for Dynamo-Electric Machines
391.	09/16/82	09/22/82	01/08/89	395,962	Method of Manufacturing Electric Lamps
495.	01/22/84	04/05/84	01/08/89	395,963	Incandescent-Lamp Filament
592.	03/19/88	03/29/88	01/15/89	396,356	Magnetic Separator
619.	09/19/88	09/27/88	02/05/89	397,280	Phonograph Recorder and Reproducer
615.	08/31/88	09/15/88	02/12/89	397,705	Method of Winding Field-Magnets
620.	09/29/88	10/11/88	02/12/89	397,706	Phonograph
451.	05/08/83	05/14/83	02/26/89	398,774	Incandescent Electric Lamp
281.	08/11/81	08/25/82	03/26/89	400,317	Ore-Separator
598.	05/22/88	06/07/88	04/02/89	400,646	Phonograph Recorder and Reproducer
603.	06/30/88	07/07/88	04/02/89	400,647	Phonograph
613.	07/27/88	07/30/88	04/02/89	400,648	Phonogram-Blank
621.	09/29/88	10/11/88	04/02/89	400,649	Method of Making Phonogram-Blanks
622.	10/15/88	10/17/88	04/02/89	400,650	Method of Making Phonogram-Blanks
364.	06/12/82	08/07/82	04/16/89	401,486	System of Electric Lighting
329.	02/10/82	08/07/82	04/16/89	401,646	Incandescing Electric Lamp
285.	08/24/81	10/04/81	06/11/89	404,902	Electrical-Distribution System
540.	08/06/86	08/11/86	07/02/89	406,130	Manufacture of Incandescent Electric Lamps
533.	01/28/86	02/19/86	07/09/89	406,567	Telephone
623.	10/15/88	10/17/88	07/09/89	406,568	Phonograph
626.	01/10/89	01/19/89	07/09/89	406,569	Phonogram-Blank
629.	02/01/89	02/11/89	07/09/89	406,570	Phonograph
630.	02/01/89	02/11/89	07/09/89	406,571	Process of Treating Phonogram-Blanks
631.	02/01/89	02/11/89	07/09/89	406,572	Automatic Determining Device for Phonographs
632.	02/01/89	02/11/89	07/09/89	406,573	Automatic Determining Device for Phonographs
633.	02/01/89	02/11/89	07/09/89	406,574	Automatic Determining Device for Phonographs
634.	02/01/89	02/11/89	07/09/89	406,575	Automatic Determining Device for Phonographs
637.	02/01/89	02/16/89	07/09/89	406,576	Phonogram-Blank
235.	01/19/81	01/31/81	07/09/89	406,824	Electric Meter
387.	08/25/82	09/13/82	07/09/89	406,825	Electric Meter
404.	10/19/82	10/20/82	09/17/89	411,016	Manufacture of Carbon Filaments
447.	04/06/83	04/17/83	09/17/89	411,017	Carbonizing-Flask
536.	07/15/86	07/17/86	09/17/89	411,018	Manufacture of Incandescent Electric Lamps
539.	07/20/86	07/29/86	09/17/89	411,019	Manufacture of Incandescent Electric Lamps
552.	11/26/86	12/06/86	09/17/89	411,020	Manufacture of Carbon Filaments
638.	03/22/89	03/25/89	11/12/89	414,759	Phonogram-Blank
640.	03/22/89	03/30/89	11/12/89	414,760	Phonograph
647.	07/16/89	08/10/89	11/12/89	414,761	Phonogram-Blank
137.	08/16/77	08/22/77	02/04/90	420,594	Quadruplex Telegraph
526.	10/07/85	10/23/85	02/25/90	422,072	Telegraphy
528.	11/12/85	11/24/85	02/25/90	422,073	Telegraphy
529.	11/24/85	02/19/86	02/25/90	422,074	Telegraphy
508.	10/21/84	12/01/84	03/04/90	422,577	Apparatus for Speaking-Telephones
511.	12/09/84	12/15/84	03/04/90	422,578	Telephonic Repeater
512.	12/09/84	12/15/84	03/04/90	422,579	Telephonic Repeater
643.	06/15/89	07/02/89	03/11/90	423,039	Phonograph for Dolls or other Toys
272.	06/03/81	06/22/81	04/15/90	425,760	Measurement of Electricity in Distribution Systems
489.	11/20/83	11/22/83	04/15/90	425,761	Incandescent Lamp
591.	03/03/88	03/08/88	04/15/90	425,762	Cut-Out for Incandescent Electric Lamps
282.	08/20/81	11/15/81	04/15/90	425,763	Commutator for Dynamo-Electric Machines
644.	06/15/89	07/02/89	04/29/90	426,527	Automatic Determining Device for Phonographs
611.	07/14/88	07/30/88	06/17/90	430,274	Phonogram-Blank
617.	09/12/88	09/20/88	06/17/90	430,275	Magnetic Separator
628.	01/12/89	01/15/89	06/17/90	430,276	Phonograph
635.	02/01/89	02/11/89	06/17/90	430,277	Automatic Determining Device for Phonographs
641.	04/08/89	04/10/89	06/17/90	430,278	Phonograph
645.	06/15/89	07/02/89	06/17/90	430,279	Voltaic Battery
648.	07/20/89	07/29/89	06/17/90	430,280	Magnetic Separator
577.	11/22/87	11/26/87	06/17/90	430,570	Phonogram-Blank
399.	10/14/82	10/20/82	06/24/90	430,932	Manufacture of Incandescent Lamps
414.	11/03/82	11/09/82	06/24/90	430,933	Filament for Incandescent Lamps
467.	06/25/83	06/29/83	06/24/90	430,934	Electric-Lighting System
237.	02/03/81	02/21/81	06/24/90	431,018	Dynamo or Magneto-Electric Machine

90,646-242,901
1868-June 1881

248,416-288,318
July 1881-Dec. 1883

293,432-431,018
Jan. 1884-June 1890

434,585-610,706
July 1890-Dec. 1898

622,843-976,792
1899-1910

991,433-1,908,830
1911-1931