Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4522289 | Retainer ring for a freewheel clutch | Ruprecht Maurer, Max Hagen | 1985-06-11 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4522289 | Retainer ring for a freewheel clutch | Ruprecht Maurer, Max Hagen | 1985-06-11 |