Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7613378 | Optical device comprising an optical component and an optical medium with different refractive indices | Valerie Girardon, Isabelle Riant, Xavier Bonnet, Alain Fradet | 2009-11-03 |
| 5493091 | High voltage circuit breaker contact structure including ionization slot and secondary arcing features | Joël Devautour, Jean-Pierre Guery | 1996-02-20 |
| 4518036 | Device for controlling a safety valve disposed below an activation pump in a hydrocarbon production well | Paul M. Helderle | 1985-05-21 |
| 4474234 | Safety valve installed below an activation pump in a hydrocarbon production well | Francois C. Gueuret | 1984-10-02 |
| 4444251 | Combined installation comprising an activation pump and a safety valve disposed below this pump, in a hydrocarbon production well | Francois C. Gueuret | 1984-04-24 |