Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886031 | Dashpot with filter for fuel tanks | Helmut Wawra | 1989-12-12 |
| 4869283 | Device for trapping fuel vapors during the refuelling of a fuel tank | Heiner Oeffling, Harald Bohringer, Helmut Wawra | 1989-09-26 |
| 4852758 | Plastic fuel tank | Kalman Kormendi, Dieter Lampart, Fritz Mannherz | 1989-08-01 |
| 4842006 | Dashpot for fuel tanks | Helmut Wawra, Wolfgang Kleineberg | 1989-06-27 |
| 4799509 | Venting arrangement for fuel tanks of motor vehicles | Helmut Wawra, Wolfgang Kleineberg | 1989-01-24 |