Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6546748 | Cryogenic rectification system for producing ultra high purity clean dry air | Richard M. Kelly | 2003-04-15 |
| 6543253 | Method for providing refrigeration to a cryogenic rectification plant | Herbert Raymond Schaub, Todd Alan Skare | 2003-04-08 |