Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673039 | Method of monitoring vehicular traffic and of providing information to drivers and system for carring out the method | Heinz Werner Pietzsch, Rigobert Opitz, Rolf Edelmann | 1997-09-30 |