Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813988 | Suitable distillation column packing for the cryogenic separation of air | Douglas L. Bennett, Keith A. Ludwig, John S. Zabrenski | 1989-03-21 |
AP
Andrew J. Patrylak
Overall (1989): #131,644 of 140,708Top 95%
1
Patents 1989