Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6273696 | Screw spindle vacuum pump and operating method | Heiner Kösters | 2001-08-14 |
| 5924855 | Screw compressor with cooling | Dietmar Rook, Ralf Steffens | 1999-07-20 |
| 5904473 | Vacuum pump | Dietmar Rook, Ralf Steffens | 1999-05-18 |