Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8797158 | Emergency notification system utilizing digital signage and remote surveillance monitoring | Lloyd W. Hemphill, Donald J. Keehan, Denio A. Leone, Mark B. Thompson | 2014-08-05 |
| 4961088 | Monitor/warranty system for electrostatographic reproducing machines using replaceable cartridges | W. Keith Gilliland, Christian G. Midgley, Francis W. Dana | 1990-10-02 |