Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6424721 | Hearing aid with a directional microphone system as well as method for the operation thereof | — | 2002-07-23 |
| 5710820 | Programmable hearing aid | Raimund Martin, Reinhard Kern | 1998-01-20 |
| 4768165 | Computer interface unit for an audiometer | — | 1988-08-30 |
| 4454181 | Resiliently deformable safety covering tile | — | 1984-06-12 |