Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D498530 | Portion of full-face mask | — | 2004-11-16 |
| 6796308 | Mask cushion and frame assembly | Michael Kassipillai Gunaratnam, Philip Rodney Kwok | 2004-09-28 |
| D493221 | Portion of a full face mask | — | 2004-07-20 |
| 6701927 | Full-face mask and mask cushion therefor | Philip Rodney Kwok, Robert Edward Styles | 2004-03-09 |