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All Patents in class 251/266
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	236,780	Jan. 18, 1881	Z.E. Coffin	Stop-valve
	659,234	Oct. 09, 1900	J. Hughes	Blow Off Valve
	1,151,776	Aug. 31, 1915	J.L. Fuller	Valve

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