Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10827787 | Maintenance-free respirator that has concave portions on opposing sides of mask top section | John M. Facer, Peter S. Leonard, Desmond T. Curran | 2020-11-10 |
| 10639506 | Personal respiratory protection device | Garry J. Walker | 2020-05-05 |