Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6212284 | Sound reproduction device | — | 2001-04-03 |
| 4646349 | Equipment for the stereophonic sound reproduction in a television receiver | — | 1987-02-24 |
| 4539442 | Loudspeaker | Hermann Gruber, Kurt Leipold, Richard Schonberger, Ulrich Kizak, Max Huttereer | 1985-09-03 |