All Patents of Type: telegraphy apparatus |
Patents 1 -
15
of 22
|
Number | Date | Patentee | Title | Type |
305X | Oct. 24, 1800 | J. Grout, Jr. | Telegraph | telegraphy apparatus |
1,062X | Jun. 14, 1809 | W. Shultz | Telegraph | telegraphy apparatus |
3,463X | Mar. 02, 1822 | D. Pierson | Domestic telegraph | telegraphy apparatus |
3,713X | Jun. 18, 1823 | J.M. Elford | Telegraph | telegraphy apparatus |
1,647 | Jun. 20, 1840 | S.F. Morse | Electric telegraph | telegraphy apparatus |
RE79 | Jan. 15, 1846 | S.F. Morse | Improvement in the mode of communicating information by signals by the application of electro-magnetism | telegraphy apparatus |
4,453 | Apr. 11, 1846 | S.F. Morse | Improvement in electro-magnetic telegraphs | telegraphy apparatus |
5,568 | May 16, 1848 | C.F. Johnson | Improvement in electric telegraphs | telegraphy apparatus |
RE118 | Jun. 13, 1848 | S.F. Morse | Improvement in electro-magnetic telegraphs | telegraphy apparatus |
8,438 | Oct. 14, 1851 | J. Yandell | Telegraph insulator | telegraphy apparatus |
NF-13 | Oct. 19, 1856 | W. Thomson | Telegraphic mirror galvanometer | telegraphy apparatus |
NF-15 | Mar. 04, 1857 | M.G. Farmer, A.F. Woodman | Improvements in electric telegraphs | telegraphy apparatus |
16,828 | Mar. 17, 1857 | M.G. Farmer, A.F. Woodman | Improvement in telegraphic repeaters | telegraphy apparatus |
NS-90 | Jul. 31, 1862 | J.F. Patten | Telegraph insulator | telegraphy apparatus |
NF-29 | Oct. 19, 1866 | F.J. Bolton | Employment of written code of signals for telegraphing | telegraphy apparatus |