Patents for George V. Johnston


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Patents for George V. Johnston
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,834,158	Dec. 01, 1931	G.V. Johnston	Grinding Machine	grinding machines
2,073,079	Mar. 09, 1937	F.J. Theler, W. Peaslee, G.V. Johnston	Lapping Machine	grinding machines