Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4543566 | Electronic monitoring system with malfunction indicator | Robert Buck, Gerd Marhofer | 1985-09-24 |
| 4525699 | Electronic monitoring system with malfunction indicator | Robert Buck, Michael Friedrich, Gerd Marhofer | 1985-06-25 |