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All Patents in class 451/148
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,612,830	Jan. 04, 1927	C.G. Olson	Grinding machine	gear hobbing machines
2,374,258	Apr. 24, 1945	G. Davenport	Infeed Control for Worm Gear Hobbing Machines	machine tool controls

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