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 1351
bstantially as set forth. 5. The combined electro-dynamic motor anddynamo-electric generator described, consist-ing of an armature having two independent 75continuous windings connected with separatebar-commutators, and a field magnet or mag-nets common to both windings, substantially as set forth.… … United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY.TELEPHONE. SPECIFICATION forming- part of Letters Patent No. 266,021, dated October 17, 1882. Application filed October I, 1881. CSTo model.) Patented in England June 15, 1878, No. 2,39G. I lo all whom it may concern: Be it…
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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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-231-170.webp)
