Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869066 | Method for the production of usable steam and non-toxic solids from geothermal brine | D. Stephen Pye, John L. Featherstone, Darrell L. Gallup, Daniel Hoyer, Morton M. Wong | 1989-09-26 |