Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817167 | Method of receiving frequency-modulated stereo multiplex signals | — | 1989-03-28 |
| 4710814 | Television sound receiving circuit for at least one sound channel contained in an RF signal | Hermannus Schat, Herbert Elmis, Bernd Novotny, Otmar Kappeler, Dietmar Ehrhardt | 1987-12-01 |