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 93
nt pass-ing through the magnet, substantially as specified. 2. The double electro-magnet, armatures, and stops,arranged substantially as specified, so that a currentof one polarity shall allow one armature to vibrate andblock the other, and the reverse, as set forth. Signed by me this 22d day of… … N. PETERS. Photo-Lithographer. Washington. D. THOMAS A. EDISON. 3 Sh°°^Machinery for Perforating Paper for Telegraphic Purposes. No. 121,601, Patented Dec. 5, 1871.
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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