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Patents for John Mason
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
GB-184,008,707Nov. 19, 1840A. StivensImprovements in machinery or apparatus, to be used as an universal chuck, for turning and boring purposesmetal lathe chucks
GB-184,410,062Feb. 19, 1844A. StivenImproved simple and compound parallel vicebench vises
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