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Updated: May 3, 2025
U.S. patents 16082, dated November 11, 1856, and 16083, dated November 18, 1856. It was not until 1861 that the question arose as to what happened to Kelly's process. Scientific American, 1861, new ser., vol. 5, pp. 148-153. There was no response to this rhetorical question, but a further inquiry as to whether the Kelly patent "could be bought" elicited a response from Kelly.
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