Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11412806 | Protection helmet with two microphones | Jan Watermann | 2022-08-16 |
| 10827253 | Earphone having separate microphones for binaural recordings and for telephoning | Sven Boetcher, Kai Lange, Nicole FRESEN | 2020-11-03 |