Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10675433 | Solenoid controlled respiratory gas demand valve | Charles P. Howard | 2020-06-09 |
| 10299701 | On-airway pulmonary function tester | Charles P. Howard | 2019-05-28 |
| 9999373 | On-airway pulmonary function tester | Charles P. Howard | 2018-06-19 |
| 9986935 | On-airway pulmonary function tester | Charles P. Howard, Joshua L. Stevenson | 2018-06-05 |