Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829592 | Circuit and method of suppressing inter-station radio tuning noise | Reinhard Wieschhoff | 1989-05-09 |
| 4808981 | Automotive electronic communication apparatus with theft disabling, particularly car radio or similar automotive audio equipment | — | 1989-02-28 |