Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10477293 | Headphone | Axel Grell, Kornelia Kaddig | 2019-11-12 |
| 8634584 | Earphone | Hatem Foudhaili, Guenter Poeppel, Grit Bonin | 2014-01-21 |
| D626504 | Accumulator | Alexander Gruve, Elmar Schulze, Dirk Krätzer | 2010-11-02 |