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 341
of the main line passingthrough both the type-wheel and the printingelectro-magnets, in combination with a shuntcircuit or switch that operates to energize theprinting-magnet during a pause after the type-wheel has been set. Signed this 16th day of June, A. D. 1873. MAESHALL LEFFEETS,President the… … United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW JEESEY. IMPROVEMENT IN CIRCUITS FOR AUTOMATIC OR CHEMICAL TELEGRAPHS. Specification forming part of Letters Patent No. 141,dated August 12,1873; application filed November 9,1872. To all wlwm it may concern: Be it known that I, Thomas A.…
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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