Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849946 | Piezo-electric transducer comprising several coaxial sensitive elements | — | 1989-07-18 |
| 4810913 | Increased sensitivity piezoelectric hydrophones | Thierry Gautier | 1989-03-07 |
| 4801838 | Method and device for improving the sensitivity and the signal to noise ratio of piezo-electric transducers having a plurality of sensors combined in parallel | Thierry Gautier | 1989-01-31 |