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Patents for Ralph A. Palmer
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
147,427Feb. 10, 1874D.W. ParkerClaw-Hammershammers
151,907Jun. 09, 1874C. ParkerClaw-Hammershammers
156,602Nov. 03, 1874H. SmithRatchet-Drillsdrill accessories
164,604Jun. 15, 1875H. SmithImprovement in drills for drilling metalhand drills
RE6,623Aug. 31, 1875D.W. ParkerImprovement in Claw-Hammershammers
198,344Dec. 18, 1877C. BuckleyImprovement in methods of boring wood cylindersdrilling and boring
319,743Jun. 09, 1885S.O. ParkerBench Vise
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