All Patents in class 72/222


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All Patents in class 72/222
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	263,519	Aug. 29, 1882	S.A. Hewitt	Shaping and Welding Rolls
	4,893,492	Jan. 16, 1990	M.B. Martincic	Roll Forging Machine and Method
	4,936,124	Jun. 26, 1990	M.B. Martincic	Roll Forging Machine and Method