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All Patents in class 415/218.1
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,131,044	Mar. 09, 1915	A.L. De Leeuw	Pump
	2,480,807	Aug. 30, 1949	C.B. De Vlieg	Method and apparatus for making impeller wheels

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