Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6128392 | Hearing aid with compensation of acoustic and/or mechanical feedback | Hans Leysieffer | 2000-10-03 |
| 4789823 | Power sensor for RF power measurements | Tilman Betz | 1988-12-06 |
| 4473327 | Apparatus for injecting pulverulent material | — | 1984-09-25 |