Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7669516 | Cylinder-piston arrangement | Thomas Cromm, Ronald E. Sachs | 2010-03-02 |
| 7241120 | Piston machine with ported piston head | Eckard Bez, Thorsten BURGGRAF | 2007-07-10 |
| 7226276 | Multi-stage reciprocating vacuum pump and method of operating the same | Eckhard Bez | 2007-06-05 |
| 7036792 | Valve arrangement for a vacuum pump | Eckhard Bez | 2006-05-02 |