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 525
ting reed, and in the main-line cir-cuit, with tubes around the cores of one of themagnets, for the purposes set forth. 8. The magnet 15, with its cores in brauchesof the main line, in combination with the po-larized reed induction-magnet 14, and resist-ance B3, substantially as set forth. Signed… … o.
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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