Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5549462 | Gear pump and its uses | Roger Stehr | 1996-08-27 |
| 5253988 | Gear pump | Alfred K. Hunziker, Fritz Haupt, Stefan Kalt | 1993-10-19 |
| 4473971 | Protective cutoff device for a gear wheel grinding machine | Meinrad Donner | 1984-10-02 |