Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4687378 | Temporarily terminating laying of underwater pipe line | Yves Le Hir | 1987-08-18 |
| 4648544 | Internal chuck for butt welding two tubes | Xavier F. Puisais, Jean-Pierre Hamon, Michel Kaluszynski | 1987-03-10 |
| 4644132 | Apparatus for horizontally supporting pipes to be butt welded | Xavier F. Puisais, Jean-Pierre Hamon, Michel Kaluszynski | 1987-02-17 |
| 4638984 | External apparatus for butt welding two pipes | Xavier F. Puisais, Jean-Pierre Hamon, Michel Kaluszynski | 1987-01-27 |
| 4638142 | Machine for electron-beam internal butt welding of tubes | Xavier F. Puisais, Jean-Pierre Hamon, Michel Kaluszynski | 1987-01-20 |
| 4493966 | Internal mandrel used in an operation of butt joining two lengths of tubing by welding | Bruno J. M. de Sivry, Bernard Sudreau, Yves Le Hir | 1985-01-15 |
| 4319709 | Positioning of an additional tubular element on a tubular structure | Bruno J. M. de Sivry | 1982-03-16 |