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Patents for H. H. Mayhew
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
212,110Feb. 11, 1879D. Powers, O. PeckImprovement in bit-stocksbrace chucks
1,272,613Jul. 16, 1918L. BroemelMachine-standtinsmith
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