Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7980786 | Dual pressure tensioner system | David Trent, Charles Clarence Trent | 2011-07-19 |
| 7980787 | Dual pressure tensioner method | David Trent, Charles Clarence Trent | 2011-07-19 |
| 7976247 | Dual pressure cylinder | David Trent, Charles Clarence Trent | 2011-07-12 |
| 7886828 | Floating vessel for supporting top tension drilling and production risers | David Trent, Daniel H. Longwell | 2011-02-15 |