Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666925 | Method and arrangement for diagnosing a tank-venting system | Helmut Denz, Ernst Wild, Georg Mallebrein | 1997-09-16 |
| 5604305 | Method for avoiding incorrect messages in the diagnosis of adjusting devices such as flow valves in motor vehicles | Helmut Denz | 1997-02-18 |