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| Application No. | Application Title | Issue Date |
| 20100026578 | Object locating apparatus, system and high-gain, high-selectivity antennae therefor The invented system includes a beacon affixed to the object subject to loss and a tracker held by the owner of the lost object, the tracker repeatedly, electronically ‘interrogating’ the beacon with a radio frequency (RF) signal, the beacon repeatedly responding to ... | 02/04/2010 |
| 20090322616 | Radar echolocater with audio output The echolocater device described herein incorporates the features of integrated sampling radar technology to create a unique device that provides, for example, the visually impaired with an excellent new tool to help navigate the world. Much like a bat using its bio-son... | 12/31/2009 |
| 20070229355 | Method and System for Determining Position of Terminal By Using Location Detector in Gps Satellite-Invisible Area The method for positioning a mobile terminal in a GPS satellite-invisible area by using a mapping server including the mobile terminal, a location detector, a PDE and a database, comprising: (a) obtaining a reference pilot signal of a base station or a repeater and a LD... | 10/04/2007 |
| 20060261939 | Electronic location monitoring system A method and apparatus for operating a monitoring unit operable to receive signals from a mobile transmitter in an electronic location monitoring system involves causing a first receiver to change a signal reception threshold thereof for receiving signals from the mobil... | 11/23/2006 |
| 20060232472 | Location determination utilizing environmental factors A method and apparatus for determining the geographic location of a user incorporates the sensing of a plurality of physical environmental parameters at the user's location. The parameter values are compared to corresponding parameter values associated with known locati... | 10/19/2006 |
