Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10955075 | Hammerless pipe union | Blair Nelsen, James R. Chisholm | 2021-03-23 |
| 10668601 | Hammer union wrench | Blair Nelsen, James R. Chisholm, Kevin Tidball | 2020-06-02 |
| 10563467 | Apparatus for handling a blowout preventer stack | Blair Nelsen | 2020-02-18 |
| 10527075 | Top drive torque restraint device | Blair Nelsen, James R. Chisholm | 2020-01-07 |