Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10994235 | Refillable air filter assembly | Zhiqun Zhang, Andrew R. Fox, Nicolas A. Echeverri | 2021-05-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10994235 | Refillable air filter assembly | Zhiqun Zhang, Andrew R. Fox, Nicolas A. Echeverri | 2021-05-04 |