| 6650633 |
Monitor network with advanced intelligent network (AIN) for electronic surveillance |
Raymond F. Albers, Barry Paul Pershan, Daniel C. Michaelis, Michael G. Pilkerton, Robert D. Farris +1 more |
2003-11-18 |
| 6504907 |
Call detail reporting for lawful surveillance |
Robert D. Farris, Dale L. Bartholomew, Raymond F. Albers, Barry Paul Pershan, Daniel C. Michaelis +5 more |
2003-01-07 |
| 6233313 |
Call detail reporting for lawful surveillance |
Robert D. Farris, Dale L. Bartholomew, Raymond F. Albers, Barry Paul Pershan, Daniel C. Michaelis +5 more |
2001-05-15 |
| 6229887 |
Advanced intelligent network (AIN) functionality for electronic surveillance |
Raymond F. Albers, Barry Paul Pershan, Daniel C. Michaelis, Michael G. Pilkerton, Robert D. Farris +1 more |
2001-05-08 |
| 6097798 |
Electronic surveillance in a public switched telephone network |
Raymond F. Albers, Barry Paul Pershan, Daniel C. Michaelis, Michael G. Pilkerton, Robert D. Farris +1 more |
2000-08-01 |
| 6078648 |
Advanced intelligent network (AIN) functionality for electronic surveillance |
Raymond F. Albers, Robert D. Farris, Barry Paul Pershan, Michael G. Pilkerton |
2000-06-20 |