Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4494032 | Transducer plate for electro-acoustic transducers | — | 1985-01-15 |
| 4379212 | Electro-acoustic transducer | — | 1983-04-05 |
| 4376232 | Electro-acoustic transducer | — | 1983-03-08 |
| 4368401 | Transducer plate for piezo-electrical transducers | Konrad Walliser | 1983-01-11 |
| 4292561 | Attenuating means for electroacoustic transducer | — | 1981-09-29 |