Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883518 | Process for air fractionation by low-temperature rectification | Werner Skolaude, Gunnar Eggendorfer | 1989-11-28 |
| 4824453 | Process and apparatus for air separation by rectification | Dietrich Rottmann | 1989-04-25 |