Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9364621 | Valved holding chamber including valve retention system | Dirk Von Hollen | 2016-06-14 |
| D692122 | Holding chamber for face mask | Dirk Von Hollen, Eric A. Lieberman, Robert Koshinskie, Donald Fraser van Royen | 2013-10-22 |