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Patents for Samuel F. Hay
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
136,152Feb. 25, 1873W.H. Goodchild, S.F. HayImprovement in joiners' clamps
172,589Jan. 25, 1876H.D. StoverImprovement in machines for cutting precious stones
227,316May 04, 1880H.D. StoverMachine for cutting and conveying wood shavings
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