Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11118377 | Dual function security/fire locking mechanism for fire rated devices | Walter T. Blanchard | 2021-09-14 |
| 10968664 | Exit device systems and methods | Paul R. Arlinghaus, Evan Ballard | 2021-04-06 |