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

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