Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880740 | Microbial reduction of iron ore | Robert G. Arnold, Gregory Stephanopoulos | 1989-11-14 |
MH
Michael Hoffmann
Overall (1989): #76,714 of 140,708Top 55%
1
Patents 1989