Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6450084 | Piston with piston ring | Ewald May | 2002-09-17 |
| 5375683 | Controllable vibration damper for motor vehicles | Zhen Huang, Hans Scheerer, Andreas Opara, Walter Schulz, Klaus Schmidt | 1994-12-27 |