Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9993765 | Portable oxygen enrichment device and method of use | Stephen Douglas Galbraith, David K. Walker, Kenneth J. McGowan, Elise N. DePetris | 2018-06-12 |
| 9492781 | Portable oxygen enrichment device and method of use | Stephen Douglas Galbraith, David K. Walker, Kenneth J. McGowan, Elise N. DePetris | 2016-11-15 |
| 8888902 | Portable oxygen enrichment device and method of use | Stephen Douglas Galbraith, David K. Walker, Kenneth J. McGowan, Elise N. DePetris | 2014-11-18 |