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 465
ith a shunt around the receiving-in-strument, containing a resistauce or electro-magnet, for the purposes set forth. 2. The combination, with the signaling elec-tro-magnet, placed in the line, of a secondarybattery, also in the line, aud a shunt aroundsuch instrument, containing a resistance,… … United States Patent Office. THOMAS A. EDISON, OF MENLO PAEK, NEW JEESEY.DUPLEX TELEGRAPH. Disclaimer forming part of Letters Patent No. 168,385, dated October 5,1875; Disclaimer filed November 16, 1878. To the Commissioner of Patents: Your petitioner, Thomas Alva Edison, ofMeulo Park, in the State…
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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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-1115-498.webp)
