All Patents in class 137/472


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All Patents in class 137/472
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	200,119	Feb. 12, 1878	H.G. Ashton	Improvement in Safety-Valves
	921,360	May 11, 1909	F. Casey	Safety-Valve
	1,032,482	Jul. 16, 1912	W.E. Jerauld	Safety Valve
	1,685,866	Oct. 02, 1928	F.E. Raymond	Safety and Relief Valve
	2,001,375	May 14, 1935	H.S. Baker	Safety Valve