Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703337 | System for cancelling sound waves | — | 1997-12-30 |
| 5699439 | Loudspeakers | Manfred Aigner | 1997-12-16 |
| 5647014 | Voice coil support for loudspeaker | — | 1997-07-08 |
| 5602931 | Connection line | — | 1997-02-11 |