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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 1667

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 1667
amo or mag-neto electric machine having a continuously- 60;wound bobbin and a single commutator, ofmain commutator-brushes and one or moreauxiliary brushes bearing on said commutator,circuits having currents of different tensionconnected with said brushes, and incandescing 65electric lamps arranged… … ATTEST! (7

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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