Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5178036 | Steering wheel | Hans-Gunther Haldenwanger, Klaus Bieber, Harmut Kersten, Klaus Grothe, Martin Kreuzer +1 more | 1993-01-12 |
| 4936261 | Apparatus for introducing a fuel additive to the fuel tank of an automotive vehicle | Fritz Naumann, Hans-Gunther Haldenwanger | 1990-06-26 |