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Patents for Norton Emery Wheel Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	521,836	Jun. 26, 1894	O.S. Walker	Bearing for emery-wheels
	664,319	Dec. 18, 1900	M.B. Hill	Oil-stone
	839,080	Dec. 18, 1906	C.O. Smith	Machine for grinding ball bearing races

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