Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838898 | Method of removal and disposal of fly ash from a high-temperature, high-pressure synthesis gas stream | Thomas S. Dewitz | 1989-06-13 |
TM
Thomas R. Mifflin
Overall (1989): #50,313 of 140,708Top 40%
1
Patents 1989