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 63
such character, by pro-longing the normal duration of one of the saidalternate currents, whether positive or nega-tive. 3. The combination of the safety-stops d dwith the stops i i and armature-lever D, sub-stantially as and for the purpose specified. In testimony that we claim the foregoingwe have… … ^^^^ Tnvejilor N. PETERS. Photo-Lithographer, Washington. D. C. United States Patent Office. THOMAS A. EDISON, OF NEW YOBK, N. T.IMPROVEMENT IN ELECTRO-MOTOR ESCAPEMENTS. Specification forming part of Letters Patent No. 103,035, dated May 17,1870. To all whom it may concern: Be it known that I,…
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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