Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857179 | Ore flotation and mineral flotation agents for use therein | Gary D. Macdonell, Harold W. Mark | 1989-08-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857179 | Ore flotation and mineral flotation agents for use therein | Gary D. Macdonell, Harold W. Mark | 1989-08-15 |