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 1029
generators, substantially as 15 set forth. 3. The combination of a battery of magnetoor dynamo generators, a series of resistancesin the field-circuits, one for each generator,and means for automatically controlling equal-ly and simultaneously the resistances of the 20field-circuits of all the… … N. PETERS. Pholo-Litbographer. Washington, United States Patent Office, THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEEDISON ELECTRIC LIOHT COMPANY, OF NEW YORK, N. Y. WEBERM ETER. SPECIFICATION forming part of Letters Patent No. 251,557, dated December 27, 1881. 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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