Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952981 | Hydrodynamic 2-speed hydraulic drive | Wolfgang Fischer | 2005-10-11 |
| 4391096 | Hydrodynamic reversing transmission | Erich Polzer, Gottfried Ruetz, Remy Pochon | 1983-07-05 |
| 4302983 | Single-tooth gearing | — | 1981-12-01 |
| 4184330 | Hydrodynamic reversing transmission | Erich Polzer | 1980-01-22 |