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All Patents in class 411/397
Patents 1 - 4 of 4
First set of recordsLast set of records
72,766Dec. 31, 1867F. WashbourneSaw Boltsaw nuts
260,743Jul. 11, 1882M. CampbellTap Wrenchtap wrenches and die stocks
303,385Aug. 12, 1884M.E. CampfieldMaking Screws For Monkey Wrencheswrench components
388,007Aug. 14, 1888P.A. WhitneyClamp Screwclamps
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