Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5740629 | Fortified gate system and locking device | Kenn C. Fischer, Kevin E. Higgins | 1998-04-21 |
| 4590460 | Stairwell security system | Ralph E. Abbott | 1986-05-20 |
| 4589081 | Intelligent surveillance alarm system and method | Theodore Ellis, Robert Lepage | 1986-05-13 |