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All Patents in class 451/487
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,575,968	Mar. 09, 1926	W.L. Bryant	Grinding machine
	5,050,352	Sep. 24, 1991	M.R. Estabrook, C.R. Van Sickle	Honing stone assembly

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