All Patents in class 285/334.4


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All Patents in class 285/334.4
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	142,528	Sep. 02, 1873	M. Stephens	Improvement in cement-lined pipes
	881,060	Mar. 03, 1908	J.J. Cook	Valve
	2,767,564	Oct. 23, 1956	F.L. Green	Tool Holder