Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6209711 | Conveying device for open-cast mines | Klaus Koopmann, Dieter Weber, Christian Keller, Siegfried Korber | 2001-04-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6209711 | Conveying device for open-cast mines | Klaus Koopmann, Dieter Weber, Christian Keller, Siegfried Korber | 2001-04-03 |