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Patents for John W. Ashman
Patents 1 - 3 of 3
First set of recordsLast set of records
463,820Nov. 24, 1891T.H. Worrall, A. LesperanceClutchmetalworking power transmission
586,263Jul. 13, 1897T.H. Worrall, A. LesperancePower-shifting device for clutch mechanismsmetalworking power transmission
606,634Jun. 28, 1898T.H. Worrall, A. LesperanceFriction-clutchmetalworking power transmission
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