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Patents for R. A. Chapman
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
RE38May 17, 1842S. MerrickImprovement in Screw Wrenchesnut wrenches
RX-38May 17, 1842S. MerrickImprovement in the Screw Wrenchesnut wrenches
5,435Feb. 08, 1848S. MerrickImprovement in revolving Spring Punchesleather punches
12,747Apr. 17, 1855C. Van HornSlide Rest for Lathesmetal lathe accessories
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