Carlos Glidden (November 8, 1834 – March 11, 1877),Koichi and Motoko Yasuoka: Myth of QWERTY Keyboard, NTT Publishing, Tokyo (2008). along with Christopher Sholes, Frank Haven Hall, and Samuel W. Soule, invented the first practical typewriter at a machine shop in Milwaukee, Wisconsin, US.Invention of the Typewriter , Wisconsin Historical Marker, Retrieved May 11, 2008.Carlos Glidden He kept on improving the typewriter until he died.Carlos Glidden: The New Type Writer,Scientific American, 27(9), p.132 (1872).U. S. Patents Nos. 200351 & 470784.
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