Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12212650 | Dual fallback hardened VoIP system with signal quality measurement | Darryl G. Curtis, Paul A. Dennis | 2025-01-28 |
| 11791977 | Dual fallback hardened VoIP system with signal quality measurement | Darryl G. Curtis, Paul A. Dennis | 2023-10-17 |
| 11405175 | Dual fallback hardened VoIP system with signal quality measurement | Darryl G. Curtis, Paul A. Dennis | 2022-08-02 |
| 10735180 | Dual fallback hardened VoIP system with signal quality measurement | Darryl G. Curtis, Paul A. Dennis | 2020-08-04 |
| 10298384 | Hardened VoIP system | Darryl G. Curtis | 2019-05-21 |
| 10044498 | Hardened VoIP system | Darryl G. Curtis | 2018-08-07 |