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 357
unches for perforating tele-graphic paper, actuated by a separate electro-magnet to each punch, in combination with the circuit-bars I and a range of finger-keys,for selecting the circuits that are to be closedto perforate the paper in accordance with thecharacter upon the key, substantially as… … AM.PMOTO-UTHQGRAPHICCO. NX{OSBORSrS PROCESSJ United States Patent Office. THOMAS A. EDISON, OP NEWARK, NEW JEESET, ASSIGNOR TO HIMSELF ANDGEORGE HARRINGTON, OF WASHINGTON, DISTRICT OF COLUMBIA. IMPROVEMENT IN CIRCUITS FOR AUTOMATIC TELEGRAPHS. Specification forming part of Letters Patent No.…
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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