Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849058 | Method of detecting nitrogen oxides in gaseous or liquid samples | John N. Driscoll | 1989-07-18 |
| 4846937 | Method of detecting carbon dioxide in a gaseous or liquid sample | John N. Driscoll | 1989-07-11 |
| 4842697 | Method of determining ammonia in a gaseous or liquid sample | John N. Driscoll | 1989-06-27 |