Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4370541 | Electron beam chamber for butt welding pipes | Bruno J. M. de Sivry, Bernard Sudreau, Claude Carsac, Jean-Pierre Hamon | 1983-01-25 |
| 4368374 | Vacuum chamber for electron beam butt welding of pipes | Bruno J. M. de Sivry, Bernard Sudreau, Claude Carsac, Jean-Pierre Hamon | 1983-01-11 |