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All Patents in class 91/447
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	230,612	Aug. 03, 1880	C.M. Brown	Power-hammer
	1,937,244	Nov. 28, 1933	G.M. Pelton	Control means for dogging mechanism
	2,027,706	Jan. 14, 1936	L.L. Schauer, J.H. McKewen	Counterbalance valve
	3,003,472	Oct. 10, 1961	D.C. Miller, R.M. Ferris	Quill Actuating and Clamping Mechanism
	3,077,132	Feb. 12, 1963	C.H. Whitmore	Feed control for band saws

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