Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11925763 | Adsorbent cartridge with accurate visual indicator | Douglas B. McKenna, Glenn S. Shealy | 2024-03-12 |
| 10994091 | Adsorbent cartridge with accurate visual indicator | Douglas B. McKenna, Glenn S. Shealy | 2021-05-04 |