Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814194 | Hydraulic torque converter | Gunnar Back, Hubert Friedmann, Stephan Maienschein | 2004-11-09 |
| 6742638 | Hydraulic torque converter | Stephan Maienschein, Gunnar Back | 2004-06-01 |
| 6708804 | Hydrodynamic torque converter | Thorsten Krause | 2004-03-23 |