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All Patents in class 73/162
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,732,730Oct. 22, 1929R.W. PorterMethod and Apparatus for Measuring and Comparing Gears and the Likegear measuring machines
1,916,118Jun. 27, 1933W.G. Hoelscher, A.E. RobinsonLapping Machinegear lapping machines
2,085,850Jul. 06, 1937W.H. Bock, J.C. DraderGear Speedergear measuring machines
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