Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7954691 | Method for joining tube plates and tubes as well as friction tool to carry out the method | Jorge F. dos Santos, Georg Wimmer | 2011-06-07 |
| 7882998 | Method and apparatus of producing a welded connection between the surfaces of two planar workpieces | Jorge F. dos Santos | 2011-02-08 |