Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624371 | Circuit-breaker including a channel for emptying the piston-driven compression chamber | Wolfgang Grieshaber, Michel Perret | 2003-09-23 |
| 6593538 | High-voltage interrupter device having combined vacuum and gas interruption | Michel Perret | 2003-07-15 |