Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6550396 | Guide wheel assembly | William K. Cooper, Holger Strubelt, Ralf Krause, Jeffrey J. Schwalm | 2003-04-22 |
| 6431082 | Guide wheel assembly | William K. Cooper, Holger Strubelt, Ralf Krause, Jeffrey J. Schwalm | 2002-08-13 |