Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682765 | Cryogenic rectification system for producing argon and lower purity oxygen | Dante Patrick Bonaquist | 1997-11-04 |
| 5682766 | Cryogenic rectification system for producing lower purity oxygen and higher purity oxygen | Dante Patrick Bonaquist | 1997-11-04 |