Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5605434 | Impeller having transport elements disposed on a pressure side of a cover disk for a centrifugal pump for dirty liquids | Christian Haag, Wolfgang Kochanowski, Thomas Pensler, Rolf Witzel | 1997-02-25 |