Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11105706 | Hydrostatic and vibration test method for a blowout preventer | Clifford Lee Hilpert | 2021-08-31 |
| 10996132 | Method for testing for fluid leaks | Clifford Lee Hilpert | 2021-05-04 |