Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11053774 | Tubing or annulus pressure operated borehole barrier valve | Michael H. Johnson | 2021-07-06 |
| 10968711 | Shifting tool having puncture device, system, and method | Roland Marcel Van Dort, Ewan Sinclair | 2021-04-06 |