Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5987894 | Temperature lowering apparatus using cryogenic expansion with the aid of spirals | — | 1999-11-23 |
| 5628194 | Process for pumping gaseous helium at cryogenic temperatures by a positive displacement pump | — | 1997-05-13 |
| 4840032 | Refrigerator, more particularly with Vuilleumier cycle, comprising pistons suspended by gas bearings | Bernard Dewanckel, Alain Ravex, Serge Reale | 1989-06-20 |
| 4485640 | Device for automatically regulating the superfluid helium level in a tank | Gilbert Bon Mardion, Marcel Locatelli | 1984-12-04 |
| 4441325 | Refrigerating or heat pumping process and apparatus | Gilbert Bon-Mardion, Albert James Lacaze | 1984-04-10 |