Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10519719 | Retractable auger head | David G. Bullock, Ronald F. Wright, Thomas A. Miller, Boston Bullock | 2019-12-31 |
| 10024105 | Rock bit | David G. Bullock | 2018-07-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10519719 | Retractable auger head | David G. Bullock, Ronald F. Wright, Thomas A. Miller, Boston Bullock | 2019-12-31 |
| 10024105 | Rock bit | David G. Bullock | 2018-07-17 |