Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978743 | Intake device for a W-12 reciprocating piston internal combustion engine | Hans-Werner Polzl, Xaver Stemmer | 2005-12-27 |
| 5502964 | Exhaust system | Hans-Werner Polzl, Xaver Stemmer | 1996-04-02 |