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 695
2 Sheets—Sheet 2. T. A. EDISON.Telephone. No. 221,957. Patented Nov. 25, 1879. … N.PETERS. PHOTO-LITHOGRAPHER, WASHINGTON, D C. United States Patent Office THOMAS A. EDISON, OF MENLO PABK, NEW JERSEY.IMPROVEMENT IN TELEPHONES. Specification forming part of Letters Patent No. 221,95S, dated November 25, 1879; application tiled March 31, 1879. To all whom it may concern: Be it…
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.
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