Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845755 | Remote control hearing aid | Dieter Busch, Gerhard Krauss | 1989-07-04 |
| 4728934 | Tactile stimulation device for hearing-impaired individuals | Wilhelm Pfander, Horst Ruckdeschel, Dieter Busch | 1988-03-01 |
| 4723293 | Hearing aid apparatus | — | 1988-02-02 |