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 521
ct-points, andmain battery, in combination with the signal-ing apparatus R and S, substantially as de-scribed, and for the purposes set forth. 13. The combination, in one and the samelocal circuit, of several set of transfer-forks ateach of the different stations, substantially asand for the… … United States Patent Office. THOMAS A. EDISON, OF MENLO PAEK, NEW JEBSEY, ASSIGNOR TO THEWESTEEN UNION TELEGEAPH COMPANY. IMPROVEMENT IN ACOUSTIC ELECTRIC TELEGRAPHS. Specification forming part of Lettera Patent No. l§6,334>, dated January 16, 1877 ; application filed May 16,1876. To all whom it…
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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