Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8416974 | Hearing aid with connecting element serving for retention in concha | Mark Balke, Uwe Rass | 2013-04-09 |
| 7856111 | Hearing aid with sound tube serving for retention in concha | Mark Balke, Uwe Rass | 2010-12-21 |
| 4689818 | Resonant peak control | — | 1987-08-25 |