Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6854463 | Filtering face mask that has a new exhalation valve | Daniel A. Japuntich, Vaughn B. Grannis, Harold J. Seppala | 2005-02-15 |
| 6843248 | Filtering face mask that has a new exhalation valve | Daniel A. Japuntich, Vaughn B. Grannis, Harold J. Seppala | 2005-01-18 |