Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5979389 | Air-intake device having variable induction-pipe length for an internal combustion engine | Peter Fischer, Michael Lutz, Stefan Schmid | 1999-11-09 |
| 5832894 | Variable air intake device | Mathias Scheytt | 1998-11-10 |
| 5709182 | Air intake device having a variable suction pipe length | Peter Fischer | 1998-01-20 |