Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11725419 | Systems and methods for preventing the opening of a door by unauthorized personnel | David Alexander Guerard | 2023-08-15 |
| 11268299 | Systems and methods for preventing the opening of a door by unauthorized personnel | David Alexander Guerard | 2022-03-08 |