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Patents for James W. Birney
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,931,254Apr. 05, 1960J.W. Birney, O.R. Birney, Jr.Boring Headboring heads
3,125,903Mar. 24, 1964J.W. Birney, O.R. Birney, Jr.Eccentric Boring Headboring heads
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