Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7114496 | Filter cartridge with integrated inhalation and exhalation valves | Todd A. Resnick | 2006-10-03 |
| 6736137 | Protective hooded respirator with oral-nasal cup breathing interface | Todd A. Resnick, John J. Kern, Anthony V. Osborne | 2004-05-18 |
| 5701893 | Disposable face mask | John J. Kern, J. Preston Wildrick | 1997-12-30 |
| 4299216 | Self-contained closed circuit breathing apparatus having a balanced breathing resistance system | Thomas E. Bernard | 1981-11-10 |