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All Patents in class 251/228
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	312,906	Feb. 24, 1885	E. Schrabetz	Gas Governor for Gas Engines
	2,414,751	Jan. 21, 1947	O.H. Ludeman	Valve
	2,481,183	Sep. 06, 1949	H.R. Welby	Pump Priming Means
	2,827,259	Mar. 18, 1958	E.T. Kindt	Automatic gate for dust collection system
	6,027,099	Feb. 22, 2000	D.S. Pusateri	Tip Valve for Pneumatic Tool

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