inventions
1800 - 306 patents; 1860 - 28,000 patents
“The patent system secured to the inventor for a limited time exclusive use of his invention, and
thereby added the fuel of interest to the fire of genius in the discovery and production of new and useful things.’’
Abraham Lincoln, 1859
Ten years earlier Lincoln had received patent no. 6469 for a scheme to buoy steamboats over shoals. It was never practically applied, but he remains the only president ever to
have secured a patent.
1793 - Eli Whitney - The Cotton Gin
1831 - Cyrus McCormick - mechanical mower-reaper
1837 - John Deere - steel plow
1846 - Elias Howe - Sewing machine, perfected by Singer
1849 - Samuel F. B. Morse - telegraph
US Patent 1,647, Improvement in the mode of communicating information by signals by the application of electro-magnetism, June 20, 1840
US Patent 1,647 (Reissue #79), Improvement in the mode of communicating information by signals by the application of electro-magnetism, January 15, 1846
US Patent 1,647 (Reissue #117), Improvement in electro-magnetic telegraphs, June 13, 1848
US Patent 3,316, Method of introducing wire into metallic pipes, October 5, 1843
US Patent 4,453, Improvement in Electro-magnetic telegraphs, April 11, 1846
US Patent 4,453 (Reissue #118), Improvement in Electro-magnetic telegraphs, June 13, 1848
US Patent 6,420, Improvement in electric telegraphs, May 1, 1849
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