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All Patents in class 241/142
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
  471,345Mar. 22, 1892D.C. StoverGrinding Mill
  682,157Sep. 10, 1901D.L. AdelspergerGrinding or Crushing Mill.
  842,681Jan. 29, 1907G.H. MayneCob Breaker or Crusher
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