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Patents for F. W. Ritterhoff
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
  41,721Feb. 23, 1864C.A. Colquitt, F.W. RitterhoffTobacco Cutting Machine
  RE1,903Mar. 14, 1865W. Mulchahey, C.A. Colquitt, F.W. RitterhoffTobacco Cutting Machine
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