Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364245 | Dry-running twin-shaft vacuum pump | Hartmut Kriehn | 1994-11-15 |
| 5356275 | Device for supplying a multi-stage dry-running vacuum pump with inert gas | Rudolf Bahnen | 1994-10-18 |