Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853193 | Process for removing NO.sub.x and SO.sub.x from a gaseous mixture | Boyd E. Hurst | 1989-08-01 |
| 4839056 | Recovery and concentration of aqueous acids and bases | — | 1989-06-13 |