Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636183 | Process and transducers submerged in a fluid for emitting low frequency acoustic waves with lightened horns | Yves Y. Ripoll | 1997-06-03 |
| 5546361 | Directional electro-acoustic transducers comprising a sealed sell consisting of two portions | Charles Pohlenz | 1996-08-13 |
| 5515343 | Electro-acoustic transducers comprising a flexible and sealed transmitting shell | Charles Pohlenz | 1996-05-07 |
| 4811307 | Tonpilz type piezoelectric transducer capable of operating alternately as wideband receiver and emitter | Charles Pohlenz, Bernard Tocquet | 1989-03-07 |
| 4752918 | Electrio-acoustic transducers | Bernard Tocquet, Charles Pohlenz | 1988-06-21 |