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All Patents in class 221/184
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
  1,111,833Sep. 29, 1914F.C. HoffmanNut-tapping machine
1,558,079Oct. 20, 1925E.W. Duston, R.S. CrosbyFeeder for automatic metal-working machines
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