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 499
s a current that is be-ing sent or not. I claim as my invention— The battery a & in a local circuit, connectedto the line, in which is a circuit-breaker, afinger-key, in combination with the magnet Im, branch h, and resistance jc, and the induc-tion-coils / g, the parts operating substan-tially… … N.PETERS, PHOTO-LITHOGRAPHER, WASHING;GN. D C. United States Patent Office, THOMAS A. EDISON, OF NEWAEK, NEW JERSEY, ASSIGNOR OF ONE-HALFHIS RIGHT TO GEORGE B. PRESCOTT, OF NEW YORK CITY. IMPROVEMENT IN DUPLEX TELEGRAPHS. Specification forming part of Letters Patent No. 118,223, dated May 30,1876;…
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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