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Patents for W. Ross Wilson
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
  359,972Mar. 22, 1887F.X. Hooper, W. HollingsworthMachine for printing on boards
  363,335May 17, 1887W. Hollingsworth, F.X. HooperApparatus for drying coated sheets of paper
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