Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5379680 | Piston for an internal combustion engine | Klaus Kofahl | 1995-01-10 |
| 4787295 | Piston for internal combustion engines | Karl-Heinz Obermeier-Wagner, Edgar Martin | 1988-11-29 |
| 4754731 | Piston of light metal | Helmut Zweck | 1988-07-05 |