All Patents in class 417/567


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All Patents in class 417/567
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	578,950	Mar. 16, 1897	J. Stumpf	Pump
	1,708,158	Apr. 09, 1929	E.H. Stedman	Valve structure for compressors
	1,865,000	Jun. 28, 1932	M.J. Goldberg	Pumping Means
	3,702,624	Nov. 14, 1972	H. Fries	Piston Pump