Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454022 | Riser tube for use in great sea depth and method for drilling at such depths | Sigbjørn Sangesland | 2002-09-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454022 | Riser tube for use in great sea depth and method for drilling at such depths | Sigbjørn Sangesland | 2002-09-24 |