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 559
ng false signals, substantially as setforth. 4. The reed d, vibrated by a magnet in themain-line circuit, in combination with the reed local circuit, magnets, and contact-points h substantially as set forth. o. The combination of a polarized acousticreceiving-instrument in the bridge-wire of… … N. PETERS. Photo-Uthograpner. Washington, D. C. United States Patent Office THOMAS A, EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO THEWESTERN UNION TELEGRAPH COMPANY. IMPROVEMENT IN TELEPHONIC OR ELECTRO-HARMONIC TELEGRAPHS. Specification forming part of Letters Patent No. 198,089, dated December 11,…
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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