Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11480031 | Pressure control device with safety locking mechanism | Steven Angstmann, Billy Gallagher | 2022-10-25 |
| 11414950 | Iris valve type well annular pressure control device and method | Steven Angstmann, Billy Gallagher | 2022-08-16 |
| 11339624 | Rotary drive actuator for an annular wellbore pressure control device | Steven Angstmann | 2022-05-24 |