Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9555202 | Respiratory drug delivery apparatus which provides audio instructions | Dirk Von Hollen | 2017-01-31 |
| D692122 | Holding chamber for face mask | Dirk Von Hollen, Eric A. Lieberman, Ashwin Kumar Kumar Viswanath, Donald Fraser van Royen | 2013-10-22 |