Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648544 | Internal chuck for butt welding two tubes | Jean-Pierre Hamon, Michel Jegousse, Michel Kaluszynski | 1987-03-10 |
| 4644132 | Apparatus for horizontally supporting pipes to be butt welded | Jean-Pierre Hamon, Michel Jegousse, Michel Kaluszynski | 1987-02-17 |
| 4638984 | External apparatus for butt welding two pipes | Jean-Pierre Hamon, Michel Jegousse, Michel Kaluszynski | 1987-01-27 |
| 4638142 | Machine for electron-beam internal butt welding of tubes | Jean-Pierre Hamon, Michel Jegousse, Michel Kaluszynski | 1987-01-20 |