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Patents for P. A. Whitney
Patents 1 - 3 of 3
First set of recordsLast set of records
74,870Feb. 25, 1868P.A. WhitneyDrill and Countersinkmetalworking countersinks
83,347Oct. 20, 1868P.A. Whitney, A.W. WhitneyMachine for Bending and Folding Sheet Metalsheet metal
83,348Oct. 20, 1868P.A. WhitneyImprovement in counter-sinkcountersinks
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