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 609
n of two stationary electrodes immersedin two cells, a conducting-fluid in said cells,and a fluid-connection between such cells, andmechanism actuated by a sound-vibrated bodyfor varying the dimensions of such liquid-con-nection and the conductivity of the same, sub-stantially as set forth. Signed… … United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO WESTERNUNION TELEGRAPH COMPANY, OF NEW YORK, N Y. IMPROVEMENT IN CIRCUITS FOR ACOUSTIC OR TELEPHONIC TELEGRAPHS. Specification forming part of Letters Patent No. 203,019, dated April 30, 1878; application filed…
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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