Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4238409 | Froth flotation with petroleum oxidate-amine compositions | Orville W. Rigdon, Gordon R. Schierberg | 1980-12-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4238409 | Froth flotation with petroleum oxidate-amine compositions | Orville W. Rigdon, Gordon R. Schierberg | 1980-12-09 |