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Mushet may have intended to invite a patent action, but evidently Bessemer could now more than ever afford to ignore the "sage of Coleford." U.S. patent 17389, dated May 26, 1857. The patent was not renewed when application was made in 1870, on the grounds that the original patent had been made co-terminal with the British patent. See below, p. 45.
Mushet, by this time, had apparently decided to generalize the application of his compound instead of citing its use in conjunction with Martien's process, or, as he put it, he had been obliged to do for his English specification by the Ebbw Vale Iron Works. Scientific American, 1856, vol. 12, p. 6. U.S. patent 17389, dated May 26, 1857.
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