Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4987866 | Light alloy piston for internal combustion engines | Siegfried Mielke, Wilfried Weber | 1991-01-29 |
| 4887519 | Expansion-controlled light alloy piston | — | 1989-12-19 |
| 4354426 | Expansion-controlled light alloy piston | — | 1982-10-19 |