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All Patents in class 409/261
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,315,476	Mar. 30, 1943	W.L. Groene	Broaching Machine
	2,319,451	May 18, 1943	W.F. Groene, W.R. Meyer	Gun rifling machine
	2,408,521	Oct. 01, 1946	F.J. Lapointe	Broaching machine

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