| Patents for G01C 17 - Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes (3,922) |
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| 04/15/2009 | CN101411170A Mobile electronic device and method for calibrating terrestrial magnetism sensor |
| 04/09/2009 | WO2009046463A2 Integrated tilt compensated compass in a single package |
| 04/09/2009 | US20090093981 Integrated tilt compensated compass in a single package |
| 04/08/2009 | CN201218839Y Multifunctional compass |
| 04/08/2009 | CN201218732Y 激光定位罗盘 Laser positioning Compass |
| 04/08/2009 | CN101405567A Mobile electronic device and its direction display method |
| 04/08/2009 | CN101403614A Anti-interference apparatus used for electronic compass in counter-star control system and its control method |
| 04/08/2009 | CN100476355C Range finder with orientation measurement and measurement method thereof |
| 04/07/2009 | CA2466594C Method for monitoring the movements of individuals in and around buildings, rooms and the like, and direction transmitter for execution of the method and other applications |
| 04/02/2009 | US20090088976 Azimuth detecting device and azimuth detecting method |
| 04/02/2009 | DE102007045684A1 Verfahren zum Betrieb eines Navigationsgeräts Method for operating a navigation device |
| 04/01/2009 | CN201213470Y Multifunctional waistband head capable of storing ID card |
| 03/31/2009 | US7509748 Magnetic MEMS sensors |
| 03/31/2009 | CA2470749C Magnetic compass |
| 03/25/2009 | EP2040037A2 Navigation device |
| 03/25/2009 | EP2040029A1 A multi mode active surveying pole |
| 03/25/2009 | EP2038607A1 Magnetic field sensor |
| 03/25/2009 | CN101393023A Digital magnetic compass on-line demarcating method based on geomagnetic model |
| 03/25/2009 | CN101393022A Digital magnetic compass demarcating method in magnetic field |
| 03/25/2009 | CN101393021A Integral digital circumferentor |
| 03/24/2009 | US7509216 Inertial navigation system error correction |
| 03/24/2009 | US7506449 Measurement device |
| 03/24/2009 | CA2453756C Convertible directional azimuth and dip measuring modular compass and method |
| 03/19/2009 | DE202008005587U1 Bluetooth, Frühwarn-Fluchtleit-Schaltverbindungssystem Bluetooth, early warning Fluchtleit-switching interconnection system |
| 03/18/2009 | CN101387518A Magnetic electron compass for vehicle with accelerating and decelerating compensating function and measurement method thereof |
| 03/12/2009 | US20090070057 Calibration program and electronic compass |
| 03/12/2009 | US20090070056 Method and device for calibrating a magnetic sensor |
| 03/11/2009 | CN100468005C Method for searching for dip angle using tilt-compensated electric compass |
| 03/05/2009 | WO2009027566A1 Integral magnetic compass for establishing deviations in real time |
| 03/04/2009 | EP2031349A1 Calibration program and electronic compass |
| 03/04/2009 | CN201203702Y 电子罗盘望远镜 Electronic compass telescope |
| 03/04/2009 | CN201203424Y Vertical facade compass |
| 02/26/2009 | WO2009023990A1 An electronic compass and a measurement method using the compass |
| 02/25/2009 | CN101373137A Electric dial compass and measuring method using the same |
| 02/19/2009 | US20090044418 Automatic Solar Compass |
| 02/19/2009 | US20090044417 Omni-directional Lens in Sundials and Solar Compasses |
| 02/18/2009 | EP2026036A2 Gyroscope north seeker system and method |
| 02/18/2009 | CN201196564Y Angle measurement apparatus |
| 02/11/2009 | CN101365925A Method for estimating movement of a solid |
| 02/11/2009 | CN100460815C Minitype digital sun sensor |
| 02/04/2009 | CN201191319Y Semi-automatic radio direction measuring machine |
| 02/03/2009 | US7486323 Portable electronic device for changing menu display state according to rotating degree and method thereof |
| 01/29/2009 | WO2009014954A1 Magnetometer correction system and method |
| 01/29/2009 | WO2008146184A3 External magnetic field angle determination |
| 01/28/2009 | EP1395844B1 Magnetic field sensor |
| 01/22/2009 | US20090019714 Balance Unit with Direction-Setting Function |
| 01/22/2009 | DE102007032026A1 Operating navigation device involves generating direction signal for user if predefined reference navigation device axis is currently pointing in direction in which predefined route leads, starting from current position of navigation device |
| 01/21/2009 | EP2016371A2 Apparatus and method for monitoring and controlling detection of stray voltage anomalies |
| 01/21/2009 | CN201185070Y North-seeking signboard |
| 01/21/2009 | CN201184790Y Reflectoscope compass |
| 01/21/2009 | CN201184789Y Compass construct |
| 01/21/2009 | CN101349553A Method for measuring tree mixing degree by common compass or theodolite |
| 01/15/2009 | WO2009009783A1 Cartesian human morpho-informatic system |
| 01/15/2009 | DE102007031922A1 Portable electronic instrument for tourists, with a compass and a computer, can be aligned on an object for information about it to be displayed |
| 01/15/2009 | CA2694527A1 Cartesian human morpho-informatic system |
| 01/14/2009 | EP2013572A1 Calibration |
| 01/14/2009 | CN201181212Y Archaizing southward pointing cart |
| 01/14/2009 | CN101344391A Lunar vehicle pose self-confirming method based on full-function sun-compass |
| 01/14/2009 | CN100451546C Automatic calibration method for use in electronic compass |
| 01/14/2009 | CN100451545C Portable terminal |
| 01/08/2009 | US20090012733 Offset correction program and electronic compass |
| 01/07/2009 | CN201177507Y Magnetic compass automatic correction system |
| 01/07/2009 | CN201177176Y South-pointing electric torch |
| 01/07/2009 | CN100449325C Magnetometer having a dynamically adjustable bias setting and electronic vehicle compass incorporating the same |
| 01/06/2009 | US7474978 High dynamic range optical receiver |
| 01/06/2009 | US7474977 Compass sensor unit and portable electronic device |
| 01/01/2009 | US20090006020 Compass sensor unit and portable electronic device |
| 12/31/2008 | EP2009395A2 Apparatus and method for updating an offset value of magnetic sensor data as well as corresponding machine readable medium |
| 12/31/2008 | EP2009394A1 Mobile electronic device and method for calibrating terrestrial magnetism sensor |
| 12/31/2008 | EP2009393A1 Mobile electronic device and method for calibrating terrestrial magnetism sensor |
| 12/31/2008 | EP2009392A1 Orientation watch |
| 12/31/2008 | CN201173780Y North-seeker mounting platform |
| 12/31/2008 | CN201173779Y North seeker forced centering device |
| 12/31/2008 | CN101334284A Synchronous sampling method suitable for walker assembled positioning |
| 12/31/2008 | CN101334280A Apparatus and method for updating an offset value of magnetic sensor data as well as corresponding machine readable medium |
| 12/24/2008 | EP2006635A1 Cartographic kit for avalanche data |
| 12/24/2008 | CN201170935Y 带指南针的地图 Map with compass |
| 12/24/2008 | CN201170799Y Receiving apparatus for satellite positioning system capable of correcting height and direction |
| 12/24/2008 | CN100446596C Mobile terminal |
| 12/23/2008 | US7469197 Measurement data collection method and portable information device |
| 12/23/2008 | US7467536 Positioning system for single or multi-axis sensitive instrument calibration and calibration system for use therewith |
| 12/18/2008 | US20080312837 Vehicle weather forecaster and navigation device with integrated power generator |
| 12/17/2008 | CN101324432A Laser compass |
| 12/16/2008 | US7466633 Electronic watch with indication of the direction of a pre-programmed geographical place |
| 12/11/2008 | WO2008036839A3 Grain angle sensor |
| 12/10/2008 | CN201163193Y Vehicle continuous positioning system |
| 12/10/2008 | CN201163189Y Compass capable of upward viewing |
| 12/10/2008 | CN101320271A Ocean towing linear array high-precision course heading control method |
| 12/04/2008 | WO2008146757A1 Physical amount measuring device and physical amount measuring method |
| 12/04/2008 | WO2008146184A2 External magnetic field angle determination |
| 12/04/2008 | WO2008122904A3 Auto-calibration of orientation sensing system |
| 12/04/2008 | DE102008001123A1 Lineal zur Winkelausrichtung Ruler for angular alignment |
| 12/03/2008 | CN101313788A Compass type shoe lace |
| 12/02/2008 | US7460976 Semi-definite programming method for ad hoc network node localization |
| 12/02/2008 | US7460970 Method and device for measuring workpieces with a measuring probe on a machine tool |
| 12/02/2008 | US7458166 Vehicle compass system with continuous automatic calibration |
| 11/27/2008 | US20080294336 Bearing Display Apparatus and Bearing Display Method |
| 11/27/2008 | US20080289203 Compass device and method for a compass device |
| 11/26/2008 | CN201155972Y Blindmen automatic voice compass |
| 11/26/2008 | CN201155963Y Reamer depth and transversely moving swing width meter for cutter-suction dredge |