Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851796 | TV-RF input circuit | — | 1989-07-25 |
| 4843636 | Television receiver having an automatic radiofrequency resonant circuit adjustment circuit | Johannes H. A. Brekelmans, Johannes Bos | 1989-06-27 |