Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4958633 | Valve for respirator | — | 1990-09-25 |
| 4881538 | Respirator air guide | — | 1989-11-21 |
| 4709696 | Sight correction attachment for respirators | — | 1987-12-01 |
| 4674155 | Buckles with structure to allow unidirectional movement of strap | Ivan R. Turtle | 1987-06-23 |
| 4606670 | Fixing rigid inserts in flexible material | — | 1986-08-19 |