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Patents for George R. Houghton
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
6,000Jan. 02, 1849A.S. MacomberTurning-lathe
  495,239Apr. 11, 1893J.R. Bate, S.H. Shadbolt, G.R. Houghton, C.B. HoughtonMachine for cutting excelsior
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