All Patents in class 417/524


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All Patents in class 417/524
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	52,431	Feb. 06, 1866	S.G. Mason, C.B. Gill	Improvement in pumps
	57,531	Aug. 28, 1866	S.G. Mason	Improvement in pump-pistons
	89,060	Apr. 20, 1869	S.G. Mason	Improvement in pump-piston
	202,633	Apr. 23, 1878	N. Clute	Double-Acting Suction and Force Pump