Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10154144 | Adjustable interactive voice response system and methods of using same | John Ragsdale | 2018-12-11 |
| 9894210 | Adjustable dual-tone multi-frequency phone system | — | 2018-02-13 |
| 9736310 | Adjustable interactive voice response system | John Ragsdale | 2017-08-15 |