Assignee
TELETRAC INC
US4 patents
Top patents by PatentIndex Score
US5778315AJul 7, 1998
Integrated mobile unit location services and cellular telephone services
TELETRAC INC65 citations95
US5802454ASep 1, 1998
Remotely distributed location and messaging system
TELETRAC INC183 citations94
US6049711AApr 11, 2000
Method and apparatus for providing location-based information services
TELETRAC INC772 citations92
US5719563AFeb 17, 1998
Fixed site monitor using a location-based communications network
TELETRAC INC42 citations81