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 615
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 body,for varying the dimensions of such liquid-con-nection and the conductivity of the same, sub-stantially as set forth. Signed by… … United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JEESEY, 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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