Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9808657 | Directional valve and breathing mask with a directional valve | Michael Rosert, Dennis Leske, Harald Heyer | 2017-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9808657 | Directional valve and breathing mask with a directional valve | Michael Rosert, Dennis Leske, Harald Heyer | 2017-11-07 |