Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6609738 | Electromagnetic door lock system | Thomas Roth, Dennis E. Wojdan, Robert Cook | 2003-08-26 |
| 6135515 | Multi-directional self-aligning shear type electromagnetic lock | Thomas Roth | 2000-10-24 |
| 6007119 | Multi-directional self-aligning shear type electromagnetic lock | Thomas Roth | 1999-12-28 |