Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7475531 | Drawing frame with aprons entwined around twin output top delivery rollers | Peter Artzt, Theo Grün, Stefan Krawietz | 2009-01-13 |
| 7140172 | Covering for drafting rollers | Peter Artzt, Theo Grün | 2006-11-28 |