All Patents in class 417/532


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All Patents in class 417/532
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	9,545X	Mar. 30, 1836	N. Chapin	Forcing pump
	52,431	Feb. 06, 1866	S.G. Mason, C.B. Gill	Improvement in pumps
	2,579,879	Dec. 25, 1951	B.H. Mosbacher, L.T. Stoyke	Gyratory valve for hydraulic pumps or motors