Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9347265 | Top drive systems for wellbore and drilling operations | Bastiaan De Jong | 2016-05-24 |
| 9249902 | Sealing system | Richard Poundstone Munroe, Lawrence E. Wells | 2016-02-02 |
| 8839854 | Top drive systems for wellbore and drilling operations | Bastiaan De Jong | 2014-09-23 |
| 8752653 | Dual ball upper internal blow out preventer valve | Padmasiri Daya Seneviratne, Lawrence E. Wells, Preston R. Fox | 2014-06-17 |