Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10128806 | Method of controlling an audio amplifier unit and audio amplifier unit | Axel Grell | 2018-11-13 |
| 9930439 | Headphone | Olav Nisse, Kornelia Kaddig, Christoph Weinreuter, Mirko Hausen | 2018-03-27 |