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| Patents for Ottis R. Birney Jr. | |||||
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| 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 | |