Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621571 | Integrated retroreflective electronic display | Heinrich Bantli, Thomas I. Bradshaw, Stephen W. Mohn | 1997-04-15 |
| 5608391 | Electronic license plate architecture | Heinrich Bantli, Wayne M. Thomas | 1997-03-04 |
| 5602739 | Vehicle tracking system incorporating traffic signal preemption | Jeffrey D. Haagenstad, Steven M. Hamer, Ronald Allen Hagen, Kim K. Christopher, Theodore B. Keyes | 1997-02-11 |