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All Patents in class 137/601.19
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	417,770	Dec. 24, 1889	M.H. Collom	Speed Governor
	588,779	Aug. 24, 1897	J.M. Rauhoff	Check-valve
	2,417,217	Mar. 11, 1947	H. Schreck	Fluid Flow Control Device

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