Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810913 | Increased sensitivity piezoelectric hydrophones | Claude Beauducel | 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 | Claude Beauducel | 1989-01-31 |