Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9821134 | Elbow for mask assembly | Joanne Elizabeth Drew, Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Anthony Michael Ging +2 more | 2017-11-21 |
| 8826908 | Elbow for mask assembly | Joanne Elizabeth Drew, Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Anthony Michael Ging +2 more | 2014-09-09 |
| 7316230 | Elbow for mask assembly | Joanne Elizabeth Drew, Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Anthony Michael Ging +2 more | 2008-01-08 |
| 7011090 | Elbow for mask assembly | Joanne Elizabeth Drew, Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Anthony Michael Ging +2 more | 2006-03-14 |