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 551
ed lever and spring be employed; but thespeed and reliability are not as great as withthe reed. I claim as my invention— The combination, with the electro-magnetand reed or lever vibrated by the same, of theperforating-needle, tubular pen, and circuit-breaker operated by the reed or lever,… … N. PETERS. Pholo-Litliogrspher. Wasiinglon. D. C\ United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEWESTERN UNION TELEGRAPH COMPANY. IMPROVEMENT IN TELEPHONIC TELEGRAPHS. Specification forming part of Letters Patent No. 198,0§7, dated December 11,1877;…
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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