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All Patents in class 137/533
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	213,309	Mar. 18, 1879	W.C. Wilcox	Improvement in pumps
	344,620	Jun. 29, 1886	J.G. Blount	Check-valve
	420,887	Feb. 04, 1890	F. Phillips	Escape-valve for dash-pots
	1,375,497	Apr. 19, 1921	E.H. Eickman	Valve

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