Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373830 | Breather for an internal combustion engine fuel tank | Helmut Denz, Guenther Riehl, Andreas Blumenstock, Rainer Frank | 1994-12-20 |
| 5361743 | Breather for an internal combustion engine fuel tank | Helmut Denz, Guenther Riehl, Andreas Blumenstock, Rainer Frank | 1994-11-08 |