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Browse by Category: Main > Communications
Class Information
Number: 342/419
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > Direction-finding receiver only > Portable
Description: Subject matter wherein the direction finding receiver is capable of being carried or conveyed.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8138988 Object locating apparatus, system and high-gain, high-selectivity antennae therefor Mar. 20, 2012
8138911 Personal locator beacon Mar. 20, 2012
8050687 Location systems and methods Nov. 1, 2011
7970081 Delay-doppler channel response demodulation method and apparatus Jun. 28, 2011
7945626 Method, system, apparatus, and computer program product for determining a physical location of a sensor May. 17, 2011
7847729 GPS pre-acquisition for geotagging digital photos Dec. 7, 2010
7538723 Personal navigation device with improved antenna mounting configuration May. 26, 2009
7456784 Combined global positioning system receiver and radio Nov. 25, 2008
7411512 Tracking the geographic location of an animal Aug. 12, 2008
7403154 Determining position without use of broadcast ephemeris information Jul. 22, 2008
7330150 Combined global positioning system receiver and radio Feb. 12, 2008
7298326 Portable device and method employing beam selection to obtain satellite network positioning signals Nov. 20, 2007
7196659 Combined global positioning system receiver and radio Mar. 27, 2007
6909964 Vehicle locating system Jun. 21, 2005
6828907 Vehicle locating device Dec. 7, 2004
6657549 Location finding system and method Dec. 2, 2003
6657587 Tracking system using miniaturized concealable communications module Dec. 2, 2003
6590534 Electronic car locator Jul. 8, 2003
6542120 Solar powered GPS device Apr. 1, 2003
6492941 Combined global positioning system receiver and radio Dec. 10, 2002
6480148 Method and apparatus for navigation guidance Nov. 12, 2002
6472976 Monitoring location and tracking system Oct. 29, 2002
6456931 Indicating directions to destination and intermediate locations in vehicle navigation systems Sep. 24, 2002
6456240 High-G, low energy beacon system Sep. 24, 2002
6415223 Interruption-free hand-held positioning method and system thereof Jul. 2, 2002
6373430 Combined global positioning system receiver and radio Apr. 16, 2002
6366850 Method for navigating a vehicle Apr. 2, 2002
6323807 Indoor navigation with wearable passive sensors Nov. 27, 2001
6300902 Personalized locator method and apparatus Oct. 9, 2001
6292137 Direction indicating compasses Sep. 18, 2001
6246362 Portable GPS signal receiving apparatus Jun. 12, 2001
6222485 Use of desired orientation in automotive navigation equipment Apr. 24, 2001
6185157 Timepiece including a GPS receiver, arranged in particular, for indicating the direction of a "target" location Feb. 6, 2001
6151353 Pre-acquisition frequency offset removal in a GPS receiver Nov. 21, 2000
6140957 Method and apparatus for navigation guidance Oct. 31, 2000
6121922 Tracking system using miniaturized concealable communications module Sep. 19, 2000
6067046 Handheld surveying device and method May. 23, 2000
5977908 Handheld surveying device and method Nov. 2, 1999
5959533 Tamper detection for body worn transmitter Sep. 28, 1999
5903235 Handheld surveying device and method May. 11, 1999
5786789 GPS and cellphone unit having add-on modules Jul. 28, 1998
5784028 Method and apparatus for simplex delivery of signals to obstructed geographical areas Jul. 21, 1998
5781150 GPS relative position detection system Jul. 14, 1998
5771018 Hand-held navigation radio with CDI for VOR and localizer Jun. 23, 1998
5754136 Rescue aiding apparatus and search system May. 19, 1998
5748148 Positional information storage and retrieval system and method May. 5, 1998
5726663 Survival radio interrogator Mar. 10, 1998
5652570 Individual location system Jul. 29, 1997
5652578 Home base directional indicator Jul. 29, 1997
5625364 Apparatus and method for finding a signal emission source Apr. 29, 1997

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