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All Patents in class 76/85
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	407,651	Jul. 23, 1889	C. Everding	Sharpening Device
	614,112	Nov. 15, 1898	T. Knudtson	Disk Sharpening Device
	681,440	Aug. 27, 1901	A.R. Clizbe	Grinding Machine
	806,244	Dec. 05, 1905	J.I. Depew	Disk-Sharpener

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