Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6256582 | Method and device for navigation support of a vehicle driver | Gerald Helmstadter | 2001-07-03 |
| 6236935 | Navigation-assistance method and device for a vehicle driver | Gerald Helmstadter | 2001-05-22 |
| 6078863 | Method of preparing route guide information for the driver of a vehicle | Gerald Helmstadter | 2000-06-20 |