Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5803558 | Track roller for crawler chain | Michael Ketting, Holger Humbek, Frank Heyer, Harald Becker, Matthias Stauch +2 more | 1998-09-08 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5803558 | Track roller for crawler chain | Michael Ketting, Holger Humbek, Frank Heyer, Harald Becker, Matthias Stauch +2 more | 1998-09-08 |