Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725988 | Hydrodynamic clutch device | Thomas Bauer, Peter Frey, Rudiger Hinkel, Ralf Ronnebeck | 2004-04-27 |
| 6471021 | Hydrodynamic coupling device | Christoph Sasse, Peter Frey, Roland Illig, Bernd Schoder, Ralf Ronnebeck | 2002-10-29 |