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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 4823138 |
Roadside beacon system |
Apr. 18, 1989 |
| 4823137 |
Multiple-fixed-frequencies navigation 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 |
| 4209787 |
Method for monitoring the location of monitored objects |
Jun. 24, 1980 |
| 4112421 |
Method and apparatus for automatically monitoring objects |
Sep. 5, 1978 |
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