| Patents for G01C 17 - Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes (3,922) |
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| 03/17/2005 | US20050060127 Work site dust control system |
| 03/15/2005 | US6868360 Small head-mounted compass system with optical display |
| 03/15/2005 | US6868354 Method of detecting a pattern and an apparatus thereof |
| 03/09/2005 | CN1590959A 电波罗盘 Radio compass |
| 03/03/2005 | US20050049821 Location estimation in partially synchronized networks |
| 03/03/2005 | US20050044737 Geomagnetic sensor having a dip angle detection function and dip angle detection method therefor |
| 03/02/2005 | EP1510781A1 Geomagnetic sensor having a dip angle detection function and dip angle detection method therefor |
| 03/01/2005 | US6861838 Magnetic detection element utilizing magneto-impedance effect, production method of the element, and portable equipment using the element |
| 03/01/2005 | US6860023 Methods and apparatus for automatic magnetic compensation |
| 03/01/2005 | US6860022 Electronic instrument having a magnetic sensor |
| 02/24/2005 | US20050040818 Magnetic field sensor |
| 02/22/2005 | US6857194 Vehicle compass system with continuous automatic calibration |
| 02/17/2005 | US20050038627 Integrated laser mapping tablet and method of use |
| 02/17/2005 | US20050037780 Mobile communication device with digital compass |
| 02/16/2005 | CN2679646Y Portable electronic appts. with azimuth measuring function and its magnetic sensor |
| 02/16/2005 | CN1580708A 转向传感器 Steering sensor |
| 02/15/2005 | US6856533 Method of modulating threshold voltage of a mask ROM |
| 02/10/2005 | WO2005012835A2 System for using a 2-axis magnetic sensor for a 3-axis compass solution |
| 02/10/2005 | CA2531803A1 System for using a 2-axis magnetic sensor for a 3-axis compass solution |
| 02/09/2005 | CN1576784A Compass |
| 02/08/2005 | US6853918 Electronic compass |
| 02/03/2005 | US20050022403 Compass-based indicator with magnetic shielding |
| 02/02/2005 | EP1502813A1 Turning detection means integrable in a control device of cornering illumination device |
| 02/02/2005 | CN1575002A Apparatus and method for determining geographical location relative to a designated geographical location |
| 02/02/2005 | CN1573287A Signal processor for use in electronic compass |
| 02/01/2005 | US6848168 Method for controlling installation of a head stack assembly |
| 01/27/2005 | WO2005008278A2 Location determination by multiple measurements having position fix improvements |
| 01/27/2005 | US20050021284 Multiple measurements per position fix improvements |
| 01/27/2005 | US20050016006 Magnetic compass |
| 01/26/2005 | EP1500905A2 Magnetic compass |
| 01/20/2005 | DE20314103U1 Feng Shui decoder has a round disk of metal, plastic, metal plate or card that is divided into radially and concentrically arranged fields and is used to determine Feng Shui indicators |
| 01/18/2005 | US6845338 Telemetric contextually based spatial audio system integrated into a mobile terminal wireless system |
| 01/18/2005 | US6842991 Gyro aided magnetic compass |
| 01/13/2005 | WO2005003683A1 Azimuth measurement device and azimuth measurement method |
| 01/13/2005 | US20050005464 Self-balancing, no-spin magnet compass |
| 01/13/2005 | DE10325804A1 Vorrichtung zur bedarfsgerechten Auswahl ortsabhängiger Informationen, die über mobile Endgeräte geliefert werden Device for the appropriate selection of location-based information that is delivered over mobile devices |
| 01/12/2005 | CN1563893A Improvement in measuring geological compass inclination |
| 01/11/2005 | US6842715 Multiple measurements per position fix improvements |
| 01/06/2005 | US20050004752 Portable device for indicating specific location and controlling method thereof |
| 01/04/2005 | US6836971 System for using a 2-axis magnetic sensor for a 3-axis compass solution |
| 12/30/2004 | US20040267505 Signal processor for use in electronic compass |
| 12/28/2004 | US6836741 Vertical calibration method for a wire cut electric discharge machine |
| 12/23/2004 | WO2004099715A3 System and method for compensating for magnetic disturbance of a compass by a moveable vehicle accessory |
| 12/22/2004 | EP1488196A2 Electronic compass system |
| 12/21/2004 | US6834251 Methods and devices for identifying, sensing and tracking objects over a surface |
| 12/16/2004 | WO2004109232A2 Device for selecting location-based information according to requirements, said information being provided by mobile terminals |
| 12/16/2004 | US20040254727 Electronic compass system |
| 12/16/2004 | US20040254726 Method and apparatus for an integrated GPS receiver and electronic compassing sensor device |
| 12/16/2004 | US20040254718 Apparatus and method for determining geographical location relative to a designated geographical location with a mobile communication device |
| 12/09/2004 | WO2004107061A1 Method for compensating disturbances due to a step motor in an electronic compass |
| 12/09/2004 | WO2004106855A2 Self-balancing, no-spin magnet compass |
| 12/09/2004 | US20040248327 Direction sensor and its production method |
| 12/07/2004 | US6829557 Method and device for incremental position determination |
| 12/07/2004 | US6826843 Electronic compass apparatus and method |
| 12/07/2004 | US6826842 Azimuth meter |
| 12/02/2004 | US20040243333 Method and apparatus for positional calibration of a thermal analysis instrument |
| 12/02/2004 | US20040240709 Method and system for controlling detail-in-context lenses through eye and position tracking |
| 12/02/2004 | US20040237319 Method for compensating for predictable generated signals in an electronic device |
| 12/01/2004 | EP1482322A2 Apparatus and method for determining geographical location relative to a designated geographical location |
| 11/25/2004 | WO2004103027A2 Electroluminescent illumination for a magnetic compass |
| 11/25/2004 | US20040236510 Electronic compass system |
| 11/25/2004 | US20040232913 Magnetic field sensor |
| 11/24/2004 | CN2658712Y Magnetic direction sensor |
| 11/23/2004 | US6823278 Method and apparatus for positional calibration of a thermal analysis instrument |
| 11/18/2004 | WO2004099715A2 System and method for compensating for magnetic disturbance of a compass by a moveable vehicle accessory |
| 11/18/2004 | US20040228116 Electroluminescent illumination for a magnetic compass |
| 11/16/2004 | US6820025 Method and apparatus for motion tracking of an articulated rigid body |
| 11/16/2004 | US6817106 Electronic equipment having a built-in electronic compass |
| 11/16/2004 | CA2364814C Magnetic compass |
| 11/09/2004 | US6816779 Programmatically computing street intersections using street geometry |
| 11/03/2004 | CN1174296C Timepiece associated with compass and sighting device |
| 11/02/2004 | US6813584 Micro azimuth-level detector based on micro electro-mechanical systems and a method for determination of attitude |
| 10/28/2004 | US20040214587 Portable terminal |
| 10/28/2004 | DE10313139A1 Verfahren zur Bestimmung der Position eines Objekts Method for determining the position of an object |
| 10/21/2004 | US20040208040 Method of modulating threshold voltage of a mask ROM |
| 10/21/2004 | DE202004009101U1 Feng Shui compass for measurement, marking and analysis, includes graticule, individually-adjustable sheets, arrow and cursor ring assembly |
| 10/20/2004 | CN2650065Y 电子罗盘 Electronic compass |
| 10/13/2004 | CN1536918A Directional sensor interface device of mobile communication terminal and its control method |
| 10/07/2004 | US20040199357 Method for determining a position of an object |
| 10/07/2004 | US20040199347 Multi stage control architecture for error suppression in micromachined gyroscopes |
| 10/07/2004 | US20040196595 Magnetoresistive sensor with magnetostatic coupling of magnetic regions |
| 10/06/2004 | CN2646730Y Bearing indication telescope |
| 09/30/2004 | WO2004083782A1 Method for measuring force-dependent gyroscope sensitivity |
| 09/30/2004 | WO2004083780A1 Azimuth measuring method and apparatus, and recording medium storing the azimuth measuring method |
| 09/30/2004 | US20040187328 Method and device for measuring directional, and computer program |
| 09/30/2004 | CA2517018A1 Method for measuring force-dependent gyroscope sensitivity |
| 09/28/2004 | US6796044 Navigation device |
| 09/23/2004 | US20040186676 Method for measuring force-dependent gyroscope sensitivity |
| 09/23/2004 | DE202004009167U1 Magnetic compass has push button operated lamp connected by conducting frame with protruding pressure and locating strips |
| 09/22/2004 | CN1531642A Azimuth meter |
| 09/15/2004 | CN2641588Y Compass |
| 09/10/2004 | WO2004076973A1 System and method for compensating for motor magnetic disturbance of a compass measurement |
| 09/10/2004 | WO2004076971A2 Electronic compass system |
| 09/09/2004 | US20040172838 Method and device for measuring directional, and computer program |
| 09/02/2004 | US20040169841 Method and apparatus for identifying objects |
| 08/26/2004 | WO2004061391A3 Methods and apparatus for automatic magnetic compensation |
| 08/25/2004 | EP1450130A1 Direction sensor and its production method |
| 08/25/2004 | CN1163727C Remote control correction method for shipping magnetic compass self-heterodyne |
| 08/18/2004 | EP1446677A2 Magnetometer having a dynamically adjustable bias setting and electronic vehicle compass incorporating the same background of the invention |
| 08/18/2004 | CN2634434Y 数字磁罗盘 Digital magnetic compass |