Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798819 | Catalyst for control of emission of sulfur oxides | Eugene P. Dai, Edward H. Holst | 1989-01-17 |
PL
Paul H. Lewis
Overall (1989): #70,906 of 140,708Top 55%
1
Patents 1989