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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 1397

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 1397
ltaneous andcorresponding moveraentsofsuchparts, meansfor regulating each generator to compensate 65for differences in the speed of the engines, andmeans for varying the electro motive force ofthe generators as required by the addition orremoval of translating devices, substantially as set forth.… … » United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY.TELEPHONE. SPECIFICATION forming part of Letters Patent No. 272,034, dated February 13, 1883. Application filed October 6, 1882. (No model.) To all whom it may concern s Be it known that I, Thomas Alva Edison,of Menlo Park,…

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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