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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 511

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 511
eostatr, connected to the line a, and to the receiv-ing-maguet 6, in combination with the bat-teries c d, shunt i, and lever /t, substantiallyas and for the purposes set forth. 2. The magnets gaud /, and induction-coilsn o, in combination with the magnet b, bat-teries c d, and shunt-circuits,… … - JAMES R.OSGOOD & CO. BOSTON. _ United States Patent Office THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEWESTERN UNION TELEGRAPH COMPANY. IMPROVEMENT IN ACOUSTIC TELEGRAPHS. Specification forming part of Letters Patent No. 182,996, dated October 10, 1876; application filed May…

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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