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 243
Alt-PHOrO-UTHOGRAPHj: CO. H.Y. IOSSOM/Vf S PROCESS.) 1? 2 Sheets — Sheet 2. T, A. EDISON.Improvement in Transmitters and Circuits for Printing-Telegraphslo. 131,343. Patented Sep. 1 7, 1872. … -(§H2)-®-®-—<§H§H§)-®- <§H§H§>®- United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW JEBSEY.IMPROVEMENT IN TRANSMITTERS AND CIRCUITS FOR PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 131,543, dated September 17,1872. To all whom it may concern: Be it known…
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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