Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869)
Edison, Thomas A. (Thomas Alva), 1847-1931, Peters, N. (Norris), lithographer, Hammer, William Joseph, 1858-1934, former owner. DSI, Edison, Thomas A. (Thomas Alva), 1847-1931, inscriber. DSI, United States. Patent Office · Washington, D.C. : U.S. Patent Office · leaf 659
smconnected thereto, a clutch for connectingone plate before disconnecting the other, sub-stantially as and for the purposes set forth. 8. The combination, with an indenting-in-strn men t,electro-magn ot,an d spirally-groovedplate, of a sounder in the same circuit as theindentiiig-magnet,… … N. PETERS. Photo-Lithographer. Washington. D. C. United States Patent Office0 THOMAS A. EDISON, OF MENLO PAEK, NEW JEBSEY, ASSIGNOE TOWESTEEN UNION TELEGEAPH COMPANY, OF NEW YORK, N. Y. IMPROVEMENT IN SEXTUPLEX TELEGRAPHS. Specification forming part of Letters Patent No. 217,781, dated July 22,…
Trade catalogs · Patents · Edison, Thomas A. (Thomas Alva), 1847-1931 · Inventions · Telegraph · Electric machinery · Electric apparatus and appliances · Phonograph · Telephone · Motors
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