Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4691622 | Light alloy piston | Wilfried Sander, Gunder Essig | 1987-09-08 |
| 4683808 | Light alloy piston for internal combustion engines | Ulrich Landau, Wilfried Sander, Klaus Schellmann | 1987-08-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4691622 | Light alloy piston | Wilfried Sander, Gunder Essig | 1987-09-08 |
| 4683808 | Light alloy piston for internal combustion engines | Ulrich Landau, Wilfried Sander, Klaus Schellmann | 1987-08-04 |