Mobile communication system
Patent 5542100 Issued on July 30, 1996. Estimated Expiration Date: 
March 9, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 9, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3276015 3518674 3573819 3646580 Radio position determining apparatus Navigation-monitoring apparatus Systems for determining distances to and locations of features on a golf course Emergency roadside telephone communications system Vehicle location system Method and apparatus for infrequent radio users to simply obtain emergency assistance InventorAssigneeApplicationNo. 402164 filed on 03/09/1995US Classes:455/404.2, Location monitoring455/521, Emergency dispatch or response455/564Auto-dialing or repertory dialing (e.g., using bar code, etc.)ExaminersPrimary: Eisenzopf, Reinhard J.Assistant: Vo, Nguyen Attorney, Agent or FirmForeign Patent References
International ClassH04B 007/26Foreign Application Priority Data1991-06-06 JPAbstractA cellular communication system includes a mobile station with a switch or button which, when actuated by the user, calls a predetermined party. In the case of an emergency, the user actuates this switch and automatically places a call to an emergency agency. The switch also actuates a system for automatically locating the mobile station by measuring distances from the mobile station to a plurality of fixed stations in the cellular communication system.Other References
Field of SearchVEHICLE POSITION INDICATIONAt remote location With map display Position indication transmitted by local station to remote location Position indication transmitted by vehicle after receipt of information from local station Land vehicle location (e.g., bus, police car Position indicating (e.g., triangulation) By computer By plotting table Traffic By deflected or repeated signal Distance Having plural transmitters or receivers Navigational Triangulation | |
