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All Patents in class 418/180
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
2,489,887	Nov. 29, 1949	C.R. Houghton	Rotary pump	rotary pumps
2,684,637	Jul. 27, 1954	R.W. Erikson	Gear pump
2,774,309	Dec. 18, 1956	O.W. Scheflow, L.T. Stoyke	Pump

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