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All Patents in class 418/170
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,684,637	Jul. 27, 1954	R.W. Erikson	Gear pump
	2,774,309	Dec. 18, 1956	O.W. Scheflow, L.T. Stoyke	Pump
	2,787,963	Apr. 09, 1957	L.A. Dolan, B.H. Lundgren	Pump

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