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All Patents in class 74/330
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	213,338	Mar. 18, 1879	S.D. Locke	Variable Speed Gearing
	707,890	Aug. 26, 1902	W.A. Wood	Variable-speed clutch
	2,856,044	Oct. 14, 1958	H.F. Koenig, III, M.W. Hazelton	Automatic shift two-speed press brake

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