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All Patents in class 137/305
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	AI72	Jan. 16, 1845	R.K. Colvin	Hydrant cock
	80,143	Jul. 21, 1868	Z.E. Coffin	Improvement in hydrants
	94,749	Sep. 14, 1869	B. Holly	Hydrant
	554,166	Feb. 04, 1896	S.M. West, H.C. Atkinson	Hydrant

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