Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8109721 | Bearing arrangement for a turbine rotor of a drill string turbine | Helmut Winnacker | 2012-02-07 |
| 8092147 | Turbine for power generation in a drill string | Helmut Winnacker | 2012-01-10 |
| 8042572 | Controllable pressure-reducing valve and device for the generation of pressure change signals | Helmut Winnacker | 2011-10-25 |