All Patents in class 409/250


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All Patents in class 409/250
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,088,119	Jul. 27, 1937	B.P. Schiltz	Method of machining metallic workpieces
	2,225,731	Dec. 24, 1940	W.D. Averill	Broaching Machine
	2,343,420	Mar. 07, 1944	J.W. Podesta	Broaching machine