Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H883 | Protective mask | Robert P. Wagner, William W. McCullough | 1991-02-05 |
| 4595003 | Protective mask for airborne toxic substances | Charles J. Shoemaker, John A. Scavnicky, Emily M. Hagy, Aaron Bloom | 1986-06-17 |