Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7912446 | Solutions for voice over internet protocol (VoIP) 911 location services | Yinjun Zhu, Richard Dickinson, Roger S. Marshall | 2011-03-22 |
| 7903791 | Enhanced E911 location information using voice over internet protocol (VoIP) | Richard Dickinson, Roger S. Marshall | 2011-03-08 |