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All Patents in class 418/83
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,861,168	May 31, 1932	W. Warren, J.H. Warren, E.C. Warren	Rotary Engine
	2,545,453	Mar. 20, 1951	F.P. Forss	Portable rotary grinder or die filer

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