Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798819 | Catalyst for control of emission of sulfur oxides | Paul H. Lewis, Eugene P. Dai | 1989-01-17 |
EH
Edward H. Holst
Overall (1989): #118,063 of 140,708Top 85%
1
Patents 1989