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All Patents in class 91/485
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,621,495	Mar. 22, 1927	C.M. Conradson	Rotary Pump
	2,397,314	Mar. 26, 1946	C.E. Grosser	Pump or motor unit
	2,579,879	Dec. 25, 1951	B.H. Mosbacher, L.T. Stoyke	Gyratory valve for hydraulic pumps or motors

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