Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5947626 | Frictional revolving joint | Udo Schäfer, Harry Oppenlander | 1999-09-07 |
| 4979842 | Hydraulically actuatable shrinking disc, particularly for force transmitting connection of a hub with a shaft | Udo Schäfer | 1990-12-25 |