Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H656 | Method and system for controlling the moments of firing of marine | Pleun Marinus Van Der Sman | 1989-07-04 |
| 4727956 | Method and apparatus for signal improvement in marine seismic exploration | — | 1988-03-01 |
| 4664223 | Multisensor ground-force measuring means for vibroseis | Jacobus van der Toorn, Gabriel N. M. M. van der Voort | 1987-05-12 |
| 4486864 | Method for marine seismic exploration | Leo Ongkiehong | 1984-12-04 |