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 223
rate printing-levers and theirrespective magnets in the same or branch cir-cuits, in combination with two type-wheels,positioned as specified, and mechanism sub-stantially as set forth, for preventing an im-pression from one of the type-wheels while theother is being printed from, substantially… … INVENTOR United States Patent Office. THOMAS A. EDISON, OF NEWAKK, NEW JEKSEY.IMPROVEMENT IN PRINTING-TELEGRAPHS, Specification forming part of Letters Patent No. 131,339 dated September 17, 1872. To all wlwm it may concern: Be it known that I, Thomas A. Edison, ofNewark, in the county of Essex and…
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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