Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865996 | Sorption/desorption method and apparatus | Marion H. Cates, Eugene L. Szonntagh, Rex R. Walker, W. Frank Wilhite | 1989-09-12 |
| 4828800 | System for trace gas detection | — | 1989-05-09 |