Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9080535 | Reciprocating internal combustion engine having at least one piston | — | 2015-07-14 |
| 5303683 | Piston with a profiled ring groove | Manfred Ziegler | 1994-04-19 |
| 4317969 | Electrical line-connector | Hannes Riegler | 1982-03-02 |