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Patents for Alva Allen Industries
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,140,957	Dec. 20, 1938	M. Hanna	Milling Attachment
	CA-387,198	Mar. 05, 1940	M. Hanna	Attachment for cutting keyways
	D185,589	Jun. 30, 1959	A.F. Allen, Jr.	Punch Press for Terminal Crimping

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