Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849058 | Method of detecting nitrogen oxides in gaseous or liquid samples | Edwards S. Atwood | 1989-07-18 |
| 4846937 | Method of detecting carbon dioxide in a gaseous or liquid sample | Edwards S. Atwood | 1989-07-11 |
| 4842697 | Method of determining ammonia in a gaseous or liquid sample | Edwards S. Atwood | 1989-06-27 |
| 4801841 | Gas discharge lamp with built-in resistance to color center formation in ultraviolet-transmissive window | — | 1989-01-31 |