All Patents in class 251/335.2


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All Patents in class 251/335.2
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	830,635	Sep. 11, 1906	L.R. Barker	Lathe Tool Holder and Steady Rest
	2,014,541	Sep. 17, 1935	F.W. Wappat	Pressure regulating valve
	2,192,117	Feb. 27, 1940	D.D. Wile	Control Device