Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D498529 | Portion of a cushion for use with a mask assembly in the application of continuous positive airway pressure (CPAP) | Philip Rodney Kwok | 2004-11-16 |
| 6701927 | Full-face mask and mask cushion therefor | Philip Rodney Kwok, Gregory Scott Smart | 2004-03-09 |
| 6679261 | Forehead support for facial mask | Perry David Lithgow, Zdzislaw Antoni Ziolkowski, Philip Rodney Kwok | 2004-01-20 |