Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888293 | Adapting bacteria to low pH and high arsenic concentration for use in oxidizing sulfide ores | Ralph Peter Hackl, Frank R. Wright | 1989-12-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888293 | Adapting bacteria to low pH and high arsenic concentration for use in oxidizing sulfide ores | Ralph Peter Hackl, Frank R. Wright | 1989-12-19 |