Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D692122 | Holding chamber for face mask | Dirk Von Hollen, Eric A. Lieberman, Ashwin Kumar Kumar Viswanath, Robert Koshinskie | 2013-10-22 |
| D679376 | Face mask | Dirk Von Hollen, Eric A. Lieberman, William Edgar Parr | 2013-04-02 |
| D679377 | Face mask | Dirk Von Hollen, Eric A. Lieberman, William Edgar Parr | 2013-04-02 |
| D679378 | Face mask | Dirk Von Hollen, Eric A. Lieberman, William Edgar Parr | 2013-04-02 |