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All Patents in class 33/501.16
Patents 1 - 4 of 4
Number	Date	Patentee	Title	Type
2,087,957	Jul. 27, 1937	H. Pelphrey	Gear Checking Device	gear measuring machines
2,171,589	Sep. 05, 1939	E.W. Miller	Involute Measuring Machine	gear measuring machines
2,336,845	Dec. 14, 1943	H.V. Christensen	Checking Device	gear measuring machines
2,612,701	Oct. 07, 1952	G.C. Razor	Gear Tooth Lead Testing Device	gear measuring machines

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