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Class Information
Number: 342/457
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Position indicating (e.g., triangulation) > Land vehicle location (e.g., bus, police car
Description: Subject matter wherein the position of a means of conveyance over dry terrain is determined.










Patents under this class:
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Patent Number Title Of Patent Date Issued
5068654 Collision avoidance system Nov. 26, 1991
5068656 System and method for monitoring and reporting out-of-route mileage for long haul trucks Nov. 26, 1991
5055851 Vehicle location system Oct. 8, 1991
5045861 Navigation and tracking system Sep. 3, 1991
5041837 Directional antennas for a roadside beacon system Aug. 20, 1991
5032845 Vehicle locating system with Loran-C Jul. 16, 1991
5021794 Personal emergency locator system Jun. 4, 1991
5019828 High resolution navigation and mapping system May. 28, 1991
5014206 Tracking system May. 7, 1991
5003317 Stolen vehicle recovery system Mar. 26, 1991
4987420 Method of determining a position using satellites Jan. 22, 1991
4983980 Satellite radio signal tracking method for GPS receivers Jan. 8, 1991
4983984 Roadside beacon system with polarized beams Jan. 8, 1991
4954836 Follow-up system for moving bodies Sep. 4, 1990
4949268 Land vehicle navigation system Aug. 14, 1990
4947151 Wheel mounted motion and tampering alarm Aug. 7, 1990
4939522 Method and system for monitoring vehicle location Jul. 3, 1990
4916455 Locating system and method Apr. 10, 1990
4910493 Security systems Mar. 20, 1990
4908629 Apparatus for locating and/or tracking stolen or missing vehicles and the like Mar. 13, 1990
4897661 Method and apparatus for determining the position of a vehicle Jan. 30, 1990
4896161 Roadside beacon system Jan. 23, 1990
4891650 Vehicle location system Jan. 2, 1990
4888595 Acquisition signal transmitter Dec. 19, 1989
4864313 Voting method of locating mobile objects Sep. 5, 1989
4857840 Information and guiding system including a portable receiver device having an electromagnetic wave antenna and magnetic field sensor Aug. 15, 1989
4845504 Mobile radio network for nationwide communications Jul. 4, 1989
4833481 Roadside beacon system May. 23, 1989
4823137 Multiple-fixed-frequencies navigation system Apr. 18, 1989
4823138 Roadside beacon system Apr. 18, 1989
4818998 Method of and system and apparatus for locating and/or tracking stolen or missing vehicles and the like Apr. 4, 1989
4812852 Locating system and method Mar. 14, 1989
4799062 Radio position determination method and apparatus Jan. 17, 1989
4791572 Method for accurately displaying positional information on a map Dec. 13, 1988
4751512 Differential navigation system for remote mobile users Jun. 14, 1988
4743913 Hybrid navigation system for determining a relative position and direction of a vehicle and method therefor May. 10, 1988
4742357 Stolen object location system May. 3, 1988
4740792 Vehicle location system Apr. 26, 1988
4728959 Direction finding localization system Mar. 1, 1988
4701760 Method for positioning moving vehicles and exchanging communications between the vehicles and a central station Oct. 20, 1987
4680590 Position finding system Jul. 14, 1987
4667202 Mobile radio network May. 19, 1987
4651156 Integrated radio location and communication system Mar. 17, 1987
4651157 Security monitoring and tracking system Mar. 17, 1987
4596988 Remote controlled tracking transmitter and tracking support system Jun. 24, 1986
4494119 Distress radiolocation method and system Jan. 15, 1985
4463297 Controller for mechanically actuated device Jul. 31, 1984
4459667 Guidance method and system for an automotive vehicle Jul. 10, 1984
4422076 Passive synthetic aperture system for locating a source of electromagnetic radiation Dec. 20, 1983
4229620 Mobile radiotelephone station two-way ranging system Oct. 21, 1980

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