Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6327532 | Navigation method and navigation apparatus for a vehicle | Karl-Heinz Black, Peter Heidekrueger | 2001-12-04 |
| 4688110 | Method and apparatus for recording a video signal without loss of a sound signal recorded on the same tracks | — | 1987-08-18 |