Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4756268 | Angular member for seismic cables towed by a vessel | Einar Gjestrum, Rolf Bjerk y, Clive Snook, Jan-Age Langeland | 1988-07-12 |
| 4744065 | Reinforcing device in the inner portion of seismic cables | Thor Higraff, Jan-Age Langeland | 1988-05-10 |