Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857179 | Ore flotation and mineral flotation agents for use therein | Kenneth B. Kimble, Gary D. Macdonell | 1989-08-15 |
| 4806234 | Ore flotation | Clarence R. Bresson | 1989-02-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857179 | Ore flotation and mineral flotation agents for use therein | Kenneth B. Kimble, Gary D. Macdonell | 1989-08-15 |
| 4806234 | Ore flotation | Clarence R. Bresson | 1989-02-21 |