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All Patents in class 192/66.21
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	393,682	Nov. 27, 1888	M.F. Williams	Clutch-pulley
	1,930,319	Oct. 10, 1933	W.F. Ocenasek	Friction clutch
	2,228,622	Jan. 14, 1941	G.W. Emrick	Clutch mechanism

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