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All Patents in class 30/298.4
Patents 1 - 2 of 2
First set of recordsLast set of records
126Feb. 16, 1837P. WilliamsImprovement in Machines for Cutting the Screws of Screw-Bedsteadswood threading machines
1,969,677Aug. 07, 1934A.L. StowellSafety holder for tools
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