Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5167683 | Intake air filter for the internal combustion engine of a motor vehicle | Heinz Benzler, Volker Ernst | 1992-12-01 |
| 5137557 | Suction air filter for combustion engines | Friedrich Benning, Volker Ernst, Herbert Gelb, Arthur Klotz, Rudolf Leipelt +2 more | 1992-08-11 |
| 4249500 | Flapper linkage in air intake control system of internal combustion engine | Gerhard Brenner, Heinz Fischer, Rudolf Leipelt | 1981-02-10 |