Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884249 | Marine streamer for use in seismic surveys | — | 1989-11-28 |
| 4756268 | Angular member for seismic cables towed by a vessel | Einar Gjestrum, Rolf Bjerk y, Julius Bendiksen, Jan-Age Langeland | 1988-07-12 |
| 4679178 | Arrangement in hydrophone | Eigil Larsen, Eldar Lien | 1987-07-07 |
| 4597065 | Cable for towing air/water guns behind a seismic vessel | Eldar Lien, Otto Benestad | 1986-06-24 |