Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474385 | Welded vehicle wheel | Ralf Duning, Jorn Toftegaard Hansen, Dieter Schichall | 2002-11-05 |
| 6042193 | Welded vehicle wheel | Ralf Duning, Klaus Modricker | 2000-03-28 |
| 5933956 | Method of making a light-metal strip wheel | Ralf Duning, Uwe Gohrbandt, Gerhard Sollner | 1999-08-10 |
| 5863103 | Light-metal strip wheel | Ralf Duning, Uwe Gohrbandt, Gerhard Sollner | 1999-01-26 |