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 395
on the chemical paper. I claim as my invention— The circuit 4 from the battery d, in whichthe receiviug-instrument b is placed, in combi-nation with the opposing-line circuit 2 and theshunt-circuit 3 at the receiving-instrument, inwhich are placed the transmitting-instrumentand battery, as and for… … AM.PHWO-UTHOGIIAPHIC CoM ).{Osbornes process.) United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW JEKSEY.IMPROVEMENT IN DUPLEX TELEGRAPHS. Specification forming part of Letters Patent No. 14?,913, dated February 24, 1874; application filed June 27, 1873. To all whom it may concern : Be…
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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