Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855566 | Process for striking an arc in electric welding and welding torch employing said process | Jean-Francois Hays, Pierre Legrand, Eric Verna, Michel Delzenne, Pierre Gaillard | 1989-08-08 |
| 4280042 | Process and installation for automatic ignition of a plasma cutting torch | Jean-Yves Berger, Michel Kostelitz, Raymond Egee | 1981-07-21 |