Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836836 | Separating argon/oxygen mixtures using a structured packing | Douglas L. Bennett, Keith A. Ludwig, Charles M. Woods | 1989-06-06 |
GW
George S. Witmer
Overall (1989): #110,932 of 140,708Top 80%
1
Patents 1989