Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811307 | Tonpilz type piezoelectric transducer capable of operating alternately as wideband receiver and emitter | Charles Pohlenz, Didier Boucher | 1989-03-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811307 | Tonpilz type piezoelectric transducer capable of operating alternately as wideband receiver and emitter | Charles Pohlenz, Didier Boucher | 1989-03-07 |