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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 223

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 223
arm h andconductor-pins i, in combination with the mag-net d and polarized armature, substantially asand for the purposes set forth. 2. The wire or conductor s, connecting the ,384 circuit-pins i i of the rheotome, in combina-tion with the arm h, magnet d, and polarizedarmature, substantially as… … W PHOTO-UTHOCRAPH1C CO.N.Y.IOSBORHiS .ROCKS United States Patent Office. THOMAS A. EDISON, OF NEWAKK, NEW JEESET.IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 131,335, dated September 17,1872. To all ivliom it may concern: Be it known that I, Thomas A. Edison,…

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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