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 385
2 Sheets — Sheet 2.. T. A. EDISON.Perforators for Automatic Telegraphy. No.147,312. Patented Feb. 10, 1874, … United States Patent Office. THOMAS A. EDISON, OF NEWARK, KEW JERSEY, ASSIGNOR TO HIMSELFAND GEORGE HARRINGTON, OF WASHINGTON, D. C. IMPROVEMENT IN PERFORATORS FOR AUTOMATIC TELEGRAPHY. Specification forming part of Letters Patent No. 147,312, dated February 10, 1874; application filed July 29,…
Trade catalogs · Patents · Edison, Thomas A. (Thomas Alva), 1847-1931 · Inventions · Telegraph · Electric machinery · Electric apparatus and appliances · Phonograph · Telephone · Motors
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-108-42.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-304-137.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-193-146.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-509-230.webp)