Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4463556 | Hydrodynamic starting torque converter | Erich Polzer, Gottfried Ruetz, Herbert Schmolz | 1984-08-07 |
| 4391096 | Hydrodynamic reversing transmission | Erich Polzer, Gottfried Ruetz, Hubert Schmolz | 1983-07-05 |