Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4435685 | Amplifier arrangement | Wolfgang Eckert, Ernst A. Kilian | 1984-03-06 |
| 4371841 | Circuit arrangement for eliminating turn-on and turn-off clicks in an amplifier | Wolfgang Eckert, Ernst A. Kilian | 1983-02-01 |