Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7975768 | Riser joint coupling | John E. Nelson | 2011-07-12 |
| 7963336 | Preloaded riser coupling system | Charles E. Jennings, John E. Nelson | 2011-06-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7975768 | Riser joint coupling | John E. Nelson | 2011-07-12 |
| 7963336 | Preloaded riser coupling system | Charles E. Jennings, John E. Nelson | 2011-06-21 |