Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9221127 | Method for producing welded tubes from steel | Michael Kaack, Ludwig Oesterlein | 2015-12-29 |
| 8941023 | Method for producing welded helical-seam tubes having optimized tube geometry | Carsten Holste | 2015-01-27 |