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All Patents of Type: metalworking variable speed mechanisms
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
494,383Mar. 28, 1893O.E. PerrigoEngine-Latheengine lathes
743,156Nov. 03, 1903F.O. FarwellVariable Speed and Reversing Mechanismmetalworking variable speed mechanisms
745,789Dec. 01, 1903C.M. ConradsonVariable Speed Countershaftmetalworking variable speed mechanisms
800,268Sep. 26, 1905C.M. ConradsonSpeed Changing Mechanismmetalworking variable speed mechanisms
890,333Jun. 09, 1908M. Shipley, N.D. ChardVariable-speed mechanismmetalworking variable speed mechanisms
890,334Jun. 09, 1908N.D. Chard, M. ShipleyVariable-speed mechanismmetalworking variable speed mechanisms
892,107Jun. 30, 1908G.R. WillisChange Speed Gearmetalworking variable speed mechanisms
943,142Dec. 14, 1909A.L. De LeeuwVariable Speed Driving Mechanismmetalworking variable speed mechanisms
2,992,565Jul. 18, 1961K.A. Riedel, J.A. HansenAutomatic Speed Change Mechanismmilling machines
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