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 345
that mark clear and distinct. I claim as my invention— The rheostat I applied to the battery h inthe local circuit to regulate the action there-of, in combination with the rheostat / in thebranch circuit, and the receiving instrumentin the main circuit, substantially as and forthe purposes set… … United States Patent Office THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO HIMSELFAND GEORGE HARRINGTON, OF WASHINGTON, D. 0. IMPROVEMENT IN CIRCUITS FOR AUTOMATIC TELEGRAPHS. Specification forming part of Letters Patent No. 141,VIS, elated August 12, 1873; application filed January 15,1873.…
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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