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 75
posite sidesof a fractional sign, substantially as set forth,to print letters, figures, and fractions, as speci-fied. 6. A type-wheel with figures arranged oneach side of a hyphen or fractional sign, asand for the purposes set forth. 7. The type-wheel motor composed of a vi-brating arm and pawls,…
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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