Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7522884 | Apparatus and method for analyzing drive test data for communications system | Christopher J. Hall | 2009-04-21 |
| 7256737 | Method and apparatus for geolocating a wireless communications device | Christopher J. Hall, Jimmy C. Ray | 2007-08-14 |
| 7057556 | Method and apparatus for geolocating a wireless communications device | Christopher J. Hall, Jimmy C. Ray | 2006-06-06 |
| 6891500 | Method and apparatus for geolocating a wireless communications device | Christopher J. Hall, Jimmy C. Ray | 2005-05-10 |
| 6714779 | Automated testing for cellular telephone system including emergency positioning | Christopher J. Hall, Jimmy C. Ray | 2004-03-30 |
| 6577419 | Optical-frequency communications system for aircraft | Christopher J. Hall, Jimmy C. Ray | 2003-06-10 |
| 6424837 | Automated testing for cellular telephone system including emergency positioning | Christopher J. Hall, Jimmy C. Ray | 2002-07-23 |