Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5052805 | Ventilation unit for a flame photometric detection device | — | 1991-10-01 |
| 5014541 | Continuous air monitoring apparatus and method | Marion H. Cates | 1991-05-14 |
| 4805441 | Continuous air monitoring apparatus and method | Marion H. Cates | 1989-02-21 |