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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 543

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 543
ing and non-conductingsurfaces and connections to condensers and tothe chemical recording- instrument, substan-tial] y as set forth. 2.1 The transmitting - instrument providedwith a circuit-closing point and opposing bat-tery for lessening the battery-power in themiddle portion of the pulsation for… … NPETffiS, PHOTO-UTHOQH»PH€R, WASHINGTON, D. 0 • United States Patent Office. THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO HIMSELF ANDGEORGE HARRINGTON, OF WASHINGTON, DISTRICT OF COLUMBIA. IMPROVEMENT IN AUTOMATIC TELEGRAPHS. Specification forming part of Letters Patent No. 195,752, dated…

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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