Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6793122 | Method for the production of reinforced hollow sections with a continuous periphery | — | 2004-09-21 |
| 6681611 | Process and device for manufacturing holes on the circumference of hollow sections | Ulrich Haag, Thomas Huelsberg | 2004-01-27 |