All Patents in class 137/543.13


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All Patents in class 137/543.13
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	455,001	Jun. 30, 1891	J.E. Lonergan	Testing-yoke for safety-valves
	556,037	Mar. 10, 1896	C.W. Weiss	Valve
	1,229,459	Jun. 12, 1917	C.B. Jahnke, F.G. Hobart	Suction-valve holder