Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7032418 | Vertical door locking system | Dale D. Martin, Ronald S. Slusarski, Gurdev Bains, John Hayde, Shilin Yang +5 more | 2006-04-25 |
| 6609738 | Electromagnetic door lock system | Thomas Roth, Vincent J. Frallicciardi, Robert Cook | 2003-08-26 |
| 5825288 | Monitoring device for swinging deadlock | — | 1998-10-20 |
| 5758913 | Impact resistant electromagnetic lock | Thomas Roth | 1998-06-02 |
| 5757269 | Latch monitor | Thomas Roth | 1998-05-26 |