Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342728 | Process for digesting tungsten ores containing organic matter | Paul B. Queneau, Leo W. Beckstead | 1982-08-03 |
| 4338287 | Process for conditioning tungsten concentrates | Dale K. Huggins, Leo W. Beckstead | 1982-07-06 |