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Patents for Richd. K. Evans
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
RE7,464Jan. 16, 1877G.F. SimondsImprovement in Tempering and Forming Article of Steel
RE7,465Jan. 16, 1877G.F. SimondsImprovement in Tempering and Forming Article of Steel
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