Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797550 | Fiber optic detector for flotation cell processing | Michael G. Nelson | 1989-01-10 |
| 4797559 | Method and apparatus for controlling a flotation cell | Michael G. Nelson, Thomas D. Sandbrook | 1989-01-10 |