Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021962 | Navigation method for vehicles with electronic compass | Reinhard Helldorfer, Ulrich Kanzler, Hans Rauch | 1991-06-04 |
| 4835870 | Device for measuring the distances and directions of destinations on road maps | Hans Rauch, Norbert Stepper | 1989-06-06 |