Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5380018 | Piston ring having a non-uniform radial pressure distribution | Heinrich-Christian Mader, Albin Mierbach | 1995-01-10 |
| 4973066 | Piston ring | Gerhard Duck, Hans-Rainer Brillert, Albin Mierbach | 1990-11-27 |