Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694776 | Refrigeration method and apparatus | — | 1997-12-09 |
| 5645771 | Gas injection apparatus and method having application to gold leaching | Rustam H. Sethna, Atul M. Athalye | 1997-07-08 |