Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5740235 | User-programmable paging system controller having priority-based, multiple input paging access capability for selectively activating one or more audio/visual paging output devices | Terri Runyan Shafer, Dennis Chimienti, Randall M. Wagner | 1998-04-14 |
| 5315644 | Telephone interface circuit | Randall M. Wagner, Randy A. Callaway | 1994-05-24 |
| 5289534 | Door ajar signalling device | Randall M. Wagner, Randy A. Callaway, Michael Kennedy | 1994-02-22 |
| 5164991 | Variable input amplified speaker with improved power input section | Thomas J. Johnson, Dennis P. Damewood | 1992-11-17 |