Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5046102 | Hearing aid with adjustable frequency response | Eberhard Zwicker, Thomas Beckenbauer | 1991-09-03 |
| 4953216 | Apparatus for the transmission of speech | — | 1990-08-28 |
| 4712244 | Directional microphone arrangement | Eberhard Zwicker, Thomas Beckenbauer | 1987-12-08 |