| Patents for Thomas A. Edison |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 113,034 | Mar. 28, 1871 | T.A. Edison | Improvement in printing-telegraph apparatus | telegraphy apparatus |
| 132,456 | Oct. 22, 1872 | T.A. Edison | Improvement in apparatus for perforating paper for telegraphic use | telegraphy apparatus |
| 195,751 | Oct. 02, 1877 | T.A. Edison | Automatic Telegraph | telegraphic apparatus |
| 200,032 | Feb. 05, 1878 | T.A. Edison | Synchronous Movements for Electric Telegraphs | telegraphic apparatus |
| 248,435 | Oct. 18, 1881 | T.A. Edison | Utilizing Electricity as Motive Power | DC motors |
| 251,541 | Dec. 27, 1881 | T.A. Edison | Electric Magnetic Motor | motor controls |
| 273,490 | Mar. 06, 1883 | T.A. Edison | Electro Magnetic Railway System | |
| 287,511 | Oct. 30, 1883 | T.A. Edison | Electric Regulator | motor regulators |
| 333,289 | Dec. 29, 1885 | T.A. Edison | Telegraphy | telegraphic apparatus |
| 333,290 | Dec. 29, 1885 | T.A. Edison | Duplex Telegraphy | telegraphic apparatus |
| 333,291 | Dec. 29, 1885 | T.A. Edison | Way-Station Quadruplex Telegraph | telegraphic apparatus |
| 754,755 | Mar. 15, 1904 | T.A. Edison | Compressing Dies | forging dies |
