Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973066 | Piston ring | Hans-Rainer Brillert, Albin Mierbach, Wolfgang Schmelter | 1990-11-27 |
| 4957212 | Non-circular piston rings | Hans-Rainer Brillert, Albin Mierbach | 1990-09-18 |
| 4355815 | Piston ring | — | 1982-10-26 |