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 1401
claim as my invention— 105In a telephonic receiving - instrument, twohelices, 3 and 4, and the core 23, that is mag-netized by iuduction, in combination with apermanent magnet, H, and two diaphragms thatare connected to the magnet H, so as to be nomagnetized by induction, substantially as setforth.… … ATTEST: INVEMTORi 1 i. PETERS, Photo-Uthographer, Washington, D. United States Patent OfficEo THOMAS A. EDISON, OF MENLO PAEK, NEW JERSEY.INCANDESCING ELECTRIC LAMP. SPECIFICATION forming part of Letters Patent No. 273,485, dated March 6, 1883. Application filed November - 9, 1882. (No model.) To…
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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