Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5634769 | Guide apparatus for centrifugal pumps | — | 1997-06-03 |
| 5478200 | Centrifugal pump impeller | Sonke Brodersen, Peter Hergt, Paul A. Krieger | 1995-12-26 |
| 5348444 | Single-blade impeller for centrifugal pumps | Rolf Witzel | 1994-09-20 |