Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819770 | Hearing aid with portion thereof inserted in auditory canal, with auditory canal ventilation | — | 2004-11-16 |
| 6763116 | Hearing aid and operating method therefor with control dependent on the noise content of the incoming audio signal | Roland Barthel | 2004-07-13 |
| 6724903 | Microphone arrangement in a hearing aid to be worn behind the ear | — | 2004-04-20 |