Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10393616 | Hydrostatic and vibration test method for a blowout preventer | Clifford Lee Hilpert | 2019-08-27 |
| 10330561 | Method for testing for fluid leaks | Clifford Lee Hilpert | 2019-06-25 |
| 10267705 | Hydrostatic and vibration test system for a blowout preventative | Clifford Lee Hilpert | 2019-04-23 |
| 10190381 | Variable ratio rotary energy control device for a blowout preventer safety device | Clifford Lee Hilpert | 2019-01-29 |