Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7225865 | Apparatus for positioning a tong and drilling rig provided with such an apparatus | — | 2007-06-05 |
| 7156170 | Methods and apparatus for severing nested strings of tubulars | Per Fotland | 2007-01-02 |
| 6827145 | Methods and apparatus for severing nested strings of tubulars | Per Fotland | 2004-12-07 |
| 6412553 | Apparatus for positioning a tong and drilling rig provided with such an apparatus | — | 2002-07-02 |