Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6550396 | Guide wheel assembly | Stefan Kummeter, William K. Cooper, Holger Strubelt, Ralf Krause | 2003-04-22 |
| 6477963 | Apparatus and method for steering a guideway vehicle | Christian Weule, Ralf Krause, Holger Strubelt, William K. Cooper | 2002-11-12 |
| 6431082 | Guide wheel assembly | Stefan Kummeter, William K. Cooper, Holger Strubelt, Ralf Krause | 2002-08-13 |
| 6308640 | Transportation vehicle steering apparatus | Christian Weule, Ralf Krause, Holger Stubelt, William K. Cooper | 2001-10-30 |