Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580661 | Hydrophone array | Debra L Marschall, Graham Holt | 2003-06-17 |
| 5742559 | Hydrophone and array thereof | Debra L Marschall | 1998-04-21 |
| 5742562 | Hydrophone array | Debra L Marschall | 1998-04-21 |
| 5471435 | Method for acoustic/electromagnetic signal processing | — | 1995-11-28 |
| 5381382 | Noise shielded hydrophone | — | 1995-01-10 |
| 5367497 | Extended frequency range hydrophone | — | 1994-11-22 |
| 4958329 | Hydrophone and array thereof | — | 1990-09-18 |
| 4937794 | Seismic noise suppression method | John F. Gillooly, Jr. | 1990-06-26 |
| 4733378 | Active low-profile hydrophone | Richard E. Pearce, James C. Brown | 1988-03-22 |