Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401323 | Method of producing welded Cu and Cu alloy pipes | Erling Roller, Herbert Berendes | 2002-06-11 |
| 6205833 | Cold pilger rolling tool for producing internally ribbed tubes | Horst Stinnertz | 2001-03-27 |
| 5771727 | Process and device for straight-drawing long drawing material in multiple steps | Horst Stinnertz, Karl Hausler | 1998-06-30 |