Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7144053 | Electric strike assembly | — | 2006-12-05 |
| 6874830 | Electric strike assembly | — | 2005-04-05 |
| 4506878 | Dual directional document drive apparatus | — | 1985-03-26 |
| 4448407 | Dual directional document drive apparatus | Elbert H. Vandenham | 1984-05-15 |