Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6736137 | Protective hooded respirator with oral-nasal cup breathing interface | Todd A. Resnick, Richard L. Stein, Anthony V. Osborne | 2004-05-18 |
| 6248280 | Method of manufacturing a respirator cartridge seal | Anthony V. Osborne | 2001-06-19 |
| 6099293 | Apparatus for manufacturing a respirator cartridge seal | Anthony V. Osborne | 2000-08-08 |
| 5701893 | Disposable face mask | Richard L. Stein, J. Preston Wildrick | 1997-12-30 |