Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4754281 | Direction finder operating according to the Watson-Watt principle | — | 1988-06-28 |
| 4209782 | Method and circuit arrangement for the electronically controlled release of door, safe and function locks using electronically coded keys | Norbert Donath | 1980-06-24 |