Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808384 | Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material | Clarence D. Vanderpool, Judith A. Ladd, Martin B. MacInnis | 1989-02-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808384 | Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material | Clarence D. Vanderpool, Judith A. Ladd, Martin B. MacInnis | 1989-02-28 |