Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7396091 | Caterpillar band chain for tracked vehicles | Alexandra Welp, Klaus Spies | 2008-07-08 |
| 5944395 | Connector endless track with travelling pad | Bernd-Dieter Neubert, Klaus Spies | 1999-08-31 |