Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279292 | Charging system for implantable hearing aids and tinnitus maskers | Hans Leysieffer, Guenter Hortmann | 1994-01-18 |
| 5277694 | Electromechanical transducer for implantable hearing aids | Hans Leysieffer, Guenter Hortmann | 1994-01-11 |