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All Patents in class 409/244
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	2,044,497	Jun. 16, 1936	B.P. Schiltz	Method of Machining Metallic Workpieces
	2,088,119	Jul. 27, 1937	B.P. Schiltz	Method of machining metallic workpieces
	2,255,221	Sep. 09, 1941	F.J. Lapointe	Method and means for surface broaching
	2,553,966	May 22, 1951	W.L. Groene	Method of broaching rotating work

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