Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4720248 | Thermal barrier for submersible pump and motor assemblies | Robert Dernedde, Hans-Joachim Franke, Christian Klepp | 1988-01-19 |
| 4518311 | Centrifugal pump | Robert Dernedde, Hans-Joachim Franke | 1985-05-21 |
| 4398867 | Centrifugal pump casing | Robert Dernedde, Hans-Joachim Franke | 1983-08-16 |