Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5425800 | Recovery of precious metal values from refractory ores | Douglas R. Shaw | 1995-06-20 |
| 5236492 | Recovery of precious metal values from refractory ores | Douglas R. Shaw | 1993-08-17 |