Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303556 | Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity | James R. Dray, Mark Julian Roberts, Dante Patrick Bonaquist, Harry Cheung, Paul Louis Just +1 more | 1994-04-19 |