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 523
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 che… … i, Photo-Lithographer, Washington. D. C. United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY. ASSIGNOR TO THEWESTERN UNION TELEGRAPH COMPANY. IMPROVEMENT IN ACOUSTIC ELECTRIC TELEGRAPHS. Specification forming part of Letters Pateot No. 186.3JO, dated January 16, 1877 ;…
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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