Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5755087 | Open-end rotor spinning device | Werner Biller | 1998-05-26 |
| 4881468 | Suspension conveyor system | Josef Hafner, Rolf Schonenberger, Matthias Fischer | 1989-11-21 |
| 4779537 | Track rail | Josef Hafner, Rolf Schoenenberger | 1988-10-25 |
| 4754884 | Carrier device for an overhead suspension transport system | Rolf Schonenberger, Johann Roby, Walter A. Kunze | 1988-07-05 |