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  • Edison’s U.S. Patents, 1868-1873

The following list contains all patents for which Edison executed an application prior to July 1873. It is arranged in chronological order by execution date, which 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 U.S. Patent Office received and recorded the application.

Exec. Date Appl. Date Issue Date Pat. No. Title
1. 10/13/68 10/28/68 06/01/69 90,646 Electrographic Vote-Recorder
2. 01/25/69 02/17/69 06/22/69 91,527 Printing-Telegraphs
3. 08/17/69 08/27/69 11/09/69 96,567 Printing-Telegraph Apparatus
4. 08/27/69 09/04/69 11/09/69 96,681 Automatic Electrical Switch for Telegraph Apparatus
5. 09/16/69 10/27/69 04/26/70 102,320 Printing-Telegraph Apparatus (with Franklin L. Pope)
6. 02/05/70 04/11/70 05/17/70 103,035 Electro-Motor Escapements
7. 04/12/70 04/14/70 06/07/70 103,924 Printing-Telegraph Instruments (with Franklin L. Pope)
8. 05/24/70 05/27/70 07/02/72 128,608 Printing-Telegraph Instruments (with Franklin L. Pope)
9. 06/22/70 06/28/70 05/09/71 114,656 Telegraphic Transmitting Instruments
10. 06/22/70 06/28/70 05/09/71 114,658 Electro-Magnets for Telegraph Instruments
11. 06/29/70 07/06/70 01/24/71 111,112 Governors for Electro-Motors
12. 09/06/70 09/21/70 05/09/71 114,657 Relay-Magnets for Telegraph Instruments
13. 11/17/70 11/22/70 03/28/71 113,033 Printing-Telegraph Apparatus
14. 01/10/71 01/14/71 03/28/71 113,034 Printing-Telegraph Apparatus

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15. 07/26/71 08/04/71 01/23/72 123,005 Telegraph Apparatus
16. 07/26/71 08/04/71 01/23/72 123,006 Printing-Telegraphs
17. 07/26/71 08/04/71 02/27/72 123,984 Telegraph Apparatus
18. 08/12/71 08/18/71 03/19/72 124,800 Telegraphic Recording Instruments
19. 08/16/71 08/18/71 12/05/71 121,601 Machinery for Perforating Paper for Telegraph Purposes
20. 11/13/71 11/18/71 05/07/72 126,535 Printing-Telegraphs
21. 11/13/71 11/18/71 12/10/72 133.841 Type-Writing Machines
22. 01/03/72 01/12/72 05/07/72 126,532 Printing-Telegraphs
23. 01/17/72 01/24/72 05/07/72 126,531 Printing-Telegraphs
24. 01/17/72 01/24/72 05/07/72 126,534 Printing-Telegraphs
25. 01/23/72 01/30/72 05/07/72 126,528 Type-Wheels for Printing-Telegraphs
26. 01/23/72 01/30/72 05/07/72 126,529 Type-Wheels for Printing-Telegraphs
27. 02/14/72 02/19/72 05/07/72 126,530 Printing-Telegraphs
28. 02/14/72 02/19/72 05/07/72 126,533 Printing-Telegraphs
29. 03/15/72 03/22/72 10/22/72 132,456 Apparatus for Perforating Paper for Telegraphic Use
30. 04/10/72 04/16/72 10/22/72 132,455 Paper for Chemical Telegraphs etc.
31. 04/18/72 04/25/72 11/12/72 133,019 Electrical Printing-Machines
32. 04/26/72 05/07/72 06/18/72 128,131 Printing-Telegraphs
33. 04/26/72 05/07/72 07/02/72 128,604 Printing-Telegraphs
34. 04/26/72 05/07/72 07/02/72 128,605 Printing-Telegraphs
35. 04/26/72 05/07/72 07/02/72 128,606 Printing-Telegraphs
36. 04/26/72 05/07/72 07/02/72 128,607 Printing-Telegraphs
37. 05/06/72 06/06/72 09/17/72 131,334 Rheotomes or Circuit-Directors
38. 05/08/72 06/06/72 01/14/73 134,867 Automatic Telegraph Instruments
39. 05/08/72 06/06/72 01/14/73 134,868 Electro-Magnetic Adjusters
40. 05/09/72 06/06/72 08/27/72 130,795 Electro-Magnets
41. 05/09/72 06/06/72 09/17/72 131,342 Printing-Telegraph Instruments
42. 05/28/72 06/06/72 09/17/72 131,341 Printing-Telegraph Instruments
43. 06/10/72 07/09/72 09/17/72 131,337 Printing-Telegraphs
44. 06/10/72 07/09/72 09/17/72 131,340 Printing-Telegraphs
45. 06/10/72 07/09/72 09/17/72 131,343 Transmitters and Circuits for Printing-Telegraphs
46. 06/15/72 07/09/72 09/17/72 131,335 Printing-Telegraphs
47. 06/15/72 07/09/72 09/17/72 131,336 Printing-Telegraphs
48. 06/29/72 07/09/72 09/17/72 131,338 Printing-Telegraphs
49. 06/29/72 07/09/72 09/17/72 131,339 Printing-Telegraphs
50. 06/29/72 07/09/72 09/17/72 131,344 Unison-Stops for Printing-Telegraphs
51. 10/16/72 10/22/72 01/14/73 134,866 Printing-Telegraph Instruments
52. 10/16/72 10/22/72 05/13/73 138,869 Printing-Telegraphs

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53. 10/31/72 11/05/72 09/23/73 142,999 Galvanic Batteries
54. 11/05/72 11/09/72 08/12/73 141,772 Circuits for Automatic or Chemical Telegraphs
55. 11/09/72 11/11/72 02/04/73 135,531 Circuits for Chemical Telegraphs
56. i1/26/72 12/03/72 01/27/74 146,812 Telegraph-Signal Boxes
57. 12/12/72 01/15/73 08/12/73 141.773 Circuits for Automatic Telegraphs
58. 12/12/72 01/15/73 08/12/73 141,776 Circuits for Automatic Telegraphs
59. 12/12/72 01/15/73 05/12/74 150,848 Chemical or Automatic Telegraphs
6o. 01/21/73 02/18/73 05/20/73 139,128 Printing-Telegraphs
61. 02/13/73 02/18/73 05/20/73 139,129 Printing-Telegraphs
62. 02/13/73 02/18/73 07/01/73 140,487 Printing-Telegraphs
63. 02/13/73 02/18/73 07/01/73 140,489 Circuits for Printing-Telegraphs
64. 03/07/73 03/13/73 05/13/73 138,870 Printing-Telegraphs
65. 03/07/73 03/13/73 08/12/73 141,774 Chemical Telegraphs
66. 03/07/73 03/13/73 08/12/73 141,775 Perforators for Automatic Telegraphs
67. 03/07/73 03/13/73 08/12/73 141,777 Relay-Magnets
68. 03/07/73 03/13/73 09/09/73 142,688 Electrical Regulators forTransmit-ting-Instruments
69. 03/07/73 03/13/73 11/17/74 156,843 Duplex Chemical Telegraphs
70. 03/24/73 07/29/73 02/10/74 147,312 Perforators for Automatic Telegraphy
71. 03/24/73 07/29/73 02/10/74 147,314 Circuits for Chemical Telegraphs
72. 03/24/73 07/29/73 05/12/74 150,847 Receiving Instruments for Chemical Telegraphs
73. 04/22/73 04/26/73 04/27/75 162,633 Duplex Telegraphs
74. 04/23/73 05/16/73 07/01/73 140,488 Printing-Telegraphs
75. 04/23/73 06/27/73 02/24/74 147,917 Duplex Telegraphs
76. 04/23/73 06/27/73 05/12/74 150,846 Telegraph-Relays
77. 04/23/73 07/29/73 02/10/74 147,313 Electric Telegraphs
78. 04/23/73 07/29/73 02/10/74 147,313 Chemical Telegraphs
79. 04/23/73 07/29/73 03/02/75 160,405 Adjustable Electro-Magnets for Relays, etc.

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