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Patents for James W. Birney
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	2,931,254	Apr. 05, 1960	J.W. Birney, O.R. Birney, Jr.	Boring Head
	3,125,903	Mar. 24, 1964	J.W. Birney, O.R. Birney, Jr.	Eccentric Boring Head

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