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All Patents in class 492/31
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,094,361	Apr. 21, 1914	J.C. Blevney	Polishing device
	2,723,505	Nov. 15, 1955	F.G. Krafft	Method and Apparatus for Surface Finishing

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