Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6705272 | Air intake system with an air filter | Rudolf Leipelt, Robert Vaculik, Thomas Haubold | 2004-03-16 |
| 6688422 | Method and apparatus for actively influencing the intake noise of an internal combustion engine | Franc Pricken, Rolf Schirmacher | 2004-02-10 |