Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685173 | Process and plant for the production of a gas under pressure by cryogenic distillation | Mike De L'Isle | 1997-11-11 |
| 5626036 | Process for the production of oxygen by cryogenic distillation | — | 1997-05-06 |