Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7686544 | Method and arrangement by a workover riser connection | Frode Johnsen | 2010-03-30 |
| 7334967 | Method and arrangement by a workover riser connection | Frode Johnsen | 2008-02-26 |