Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856109 | Face protective device | Raoul Desy | 1989-08-15 |
| 4711539 | Support structure for protective mask optical insert | Joseph J. Pienta | 1987-12-08 |
| D287649 | Disposable respirator | Joseph Z. Zdrok, Joseph Maisano | 1987-01-06 |