Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11073300 | Blast valve utilizing an aerodynamically configured blade | Samuel Koeger | 2021-07-27 |
| 11033761 | Compact NBC filtration system for collective protection shelters | Samuel Koeger | 2021-06-15 |