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All Patents in class 476/40
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
197,472Nov. 27, 1877C.W. HuntImprovement in counter-shafts for driving machineryindustrial machine mechanisms
529,713Nov. 27, 1894H.H. CummingsSpeed Changing and Reversing Mechanismmetalworking variable speed mechanisms
529,714Nov. 27, 1894H.H. CummingsSpeed Changing and Reversing Mechanismmetalworking variable speed mechanisms
623,140Apr. 18, 1899H.H. CummingsDrilling-machinedrill presses
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