Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845756 | Apparatus for through-connecting audio signals | Heinz-Peter Kretschmann | 1989-07-04 |
| 4746982 | Equipment for through-connecting color television signals | Hans-Peter Schneider | 1988-05-24 |