Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797366 | Gas treatment and resin regeneration process | Constant J. van Lookeren-Campagne | 1989-01-10 |
EO
Edward D. A. Obeng
Overall (1989): #117,831 of 140,708Top 85%
1
Patents 1989