Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671643 | Method for testing a hearing aid, and hearing aid operable according to the method | Fred Zoels | 2003-12-30 |
| 5835611 | Method for adapting the transmission characteristic of a hearing aid to the hearing impairment of the wearer | Eduard Kaiser, Roland Weidner, Jörg Haubold | 1998-11-10 |