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 813
n. What I claim as my invention is— The combination, with a local circuit andinstruments therein, of a flexible high resist- 55ance in such circuit, and a metallic contactresting therein and controlled by the main cir-cuit, substantially as and for the purpose de-scribed. This specification signed… … WITNESSES: INVENTORS: ATTOENETJ. N.PETERS, PHOTO-LITHOGRAPHER, WASHINGTON, D O. United States Patent Office^ THOMAS A. EDISON AND CHAELES BATOHELOB, OF MEJSTLO PAEK, N J.TESTING ELECTRIC-LIGHT CARBONS. SPECIFICATION forming part of Letters Patent No. 239,372, dated March 29, 1881. Application filed…
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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