Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4652214 | Seal arrangement for an oil-sealed rotary vacuum pump | — | 1987-03-24 |
| 4508494 | Two stage rotary vane pump | Erich Bachmann, Roland Fischer, Werner Peter, Bernd Scheiter, Werner Wenzel | 1985-04-02 |