Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6918390 | Forehead support for facial mask | Perry David Lithgow, Zdzislaw Antoni Ziolkowski, Philip Rodney Kwok | 2005-07-19 |
| 6871649 | Nasal mask cushion assembly | Philip Rodney Kwok | 2005-03-29 |
| 6860269 | Forehead support for facial mask | Philip Rodney Kwok, Michael Kassipillai Gunaratnam, Perry David Lithgow, Jonathan P. Harrison, Jonathan Lee Liston +1 more | 2005-03-01 |