Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7012217 | Method and apparatus for making welded large pipes | Klaus Werner, Steffen Keitel | 2006-03-14 |
| 5478054 | Device tempering steel tubes | Paulo F. Alencar, Edesio E. D. Louzada, Werner F. Dreistein | 1995-12-26 |