Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938544 | Belt drive | Roland Hirth, Richard Mack, Ralf Weiser | 2005-09-06 |
| 6354203 | Belt drive for a machine for processing flat printing materials | Ralf Weiser, Roland Hirth, Richard Mack | 2002-03-12 |