Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5167683 | Intake air filter for the internal combustion engine of a motor vehicle | Bernhard Behrendt, Volker Ernst | 1992-12-01 |
| 5120337 | Intake air filter for the internal combustion engine of a motor vehicle | Volker Ernst, Arthur Klotz | 1992-06-09 |