Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7653207 | Bistable spreading head harness | Jan Peter Kuhtz | 2010-01-26 |
| 6711273 | Chin loop headset | — | 2004-03-23 |
| D464038 | Earphone | — | 2002-10-08 |
| 5784471 | Hearing aid with an electrodynamic acoustic transducer | — | 1998-07-21 |