Inside Out Library

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 667

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 667
similar device, substantially as specified. 2. The combination, in a closed circuit, ofa receiving-magnet, a telephone, an electro-magnet, or its equivalent, and an apparatusfor reversing the connections of the same inthe circuit, a rheostat or resistance, a shuntto the same, and a key,… … N. PETERS. Plioto-Lrttiegiiip^or. Washington. 0. C. United States Patent Office. THOMAS A. EDISON, OF MEKLO PARK, NEW JEESEY.IMPROVEMENT IN MAGNETO-ELECTRIC MACHINES. Specification forming part of Letters Patent No. 218,166, dated Angust 5, 1879; application filed December 9, 1878. To all whom it…

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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