Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6881166 | Pulley | Georg Burkhardt | 2005-04-19 |
| 6666668 | Stator with rigid retaining ring | — | 2003-12-23 |
| 6544015 | Worm for an eccentric screw pump or a subsurface drilling motor | — | 2003-04-08 |