Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881678 | Process for the remote-controlled semi-automatic welding of two rotationally symmetrical components | — | 1989-11-21 |
| 4868649 | Apparatus for the televisual monitoring of an arc welding operation | — | 1989-09-19 |
| 4847967 | Process for the repair by lining or a steam-generator tube and a repair lining for this tube | — | 1989-07-18 |
| 4845330 | Rotary-electrode inert-gas arc welding machine | — | 1989-07-04 |
| 4826582 | Surface treatment process and device for heat exchangers | Claude Lavalerie | 1989-05-02 |
| 4821943 | Device for welding inside a tube of small diameter | Jean Peyrot | 1989-04-18 |