All Patents in class 72/20.4


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All Patents in class 72/20.4
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	2,647,421	Aug. 04, 1953	W.W. Criley	Upsetting Forging Machine
	2,713,376	Jul. 19, 1955	C.J. Bath	Metal-Forming Machine
	2,742,802	Apr. 24, 1956	H.A. Weyer, E.C. Clarke	Impact device
	2,868,268	Jan. 13, 1959	V.A. Zaverruha, T.E. Lewis, Jr.	Coil-Forming Machine with Generator Controlled Spindle Postitioning Means