Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4238409 | Froth flotation with petroleum oxidate-amine compositions | Gordon R. Schierberg, Lawrence H. Keon | 1980-12-09 |
OR
Orville W. Rigdon
Overall (All Time): #4,125,439 of 4,157,543Top 100%
1
Patents All Time