| Patents for G01C 17 - Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes (3,922) |
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| 01/15/1986 | EP0167544A1 Magnetometer with a time encryption for measuring magnetic fields. |
| 01/08/1986 | EP0166737A1 Process for determining the interference fields in vehicles having an electronic compass. |
| 01/07/1986 | CA1198890A1 Electrical control system |
| 01/03/1986 | WO1986000129A1 Process for correcting angular errors in an electronic compass in vehicles |
| 01/03/1986 | WO1986000128A1 Process for determining the direction of travel of a vehicle, using an electronic compass |
| 12/27/1985 | EP0165381A2 Portable information device |
| 12/27/1985 | EP0165258A1 Magnetometer with time coding. |
| 12/05/1985 | WO1985005444A1 Electronic compass |
| 11/26/1985 | US4555761 Direction detection for a vehicle |
| 11/13/1985 | EP0161059A1 Phase shifter |
| 11/10/1985 | CN85200086U Stereometer type compass |
| 11/06/1985 | EP0160444A2 Magnetic angular position sensor |
| 10/24/1985 | WO1985004709A1 Compass for the direct determination of the direction from a position location to a destination |
| 10/15/1985 | US4546551 Electrical control system |
| 10/15/1985 | US4546550 Compass |
| 10/01/1985 | EP0126089A4 Tactical dinghy compass. |
| 10/01/1985 | CA1194291A1 Solid state compass |
| 09/24/1985 | CA1194119A1 Process for compensating the magnetic disturbances in the determination of a magnetic heading, and devices for carrying out this process |
| 09/10/1985 | US4539760 Compass |
| 09/10/1985 | CA1193094A1 Remote reading compass with 360 degree roll capability |
| 08/20/1985 | US4535547 Mount for an earth magnetism sensor for use in an automotive vehicle |
| 08/06/1985 | US4533872 Magnetic field sensor element capable of measuring magnetic field components in two directions |
| 08/01/1985 | WO1985003347A1 Compass |
| 07/31/1985 | EP0150163A2 Orienteering Compass |
| 07/30/1985 | US4531298 Apparatus and method for controlling northerly turning error in direction indicating navigational instruments |
| 07/04/1985 | WO1985002912A1 Magnetometer with time coding |
| 07/04/1985 | WO1985002911A1 Magnetometer with a time encryption for measuring magnetic fields |
| 07/04/1985 | WO1985002902A1 Process for determining the interference fields in vehicles having an electronic compass |
| 06/26/1985 | EP0145950A1 Method and apparatus for road vehicle navigation by dead-reckoning |
| 06/18/1985 | US4523386 Heading detecting apparatus |
| 06/04/1985 | US4521875 Orientation detection system for thin-line towed sonar arrays |
| 06/04/1985 | US4521777 Apparatus for visually indicating the current location of an automotive vehicle |
| 05/28/1985 | US4520325 Phase shifters |
| 04/23/1985 | US4512667 Portable information device having an output related to natural physical events |
| 04/16/1985 | CA1185677A1 Magnetic heading reference system for military vehicles |
| 04/03/1985 | EP0135933A2 Magnetic probe |
| 03/26/1985 | US4506950 Viewing device |
| 03/26/1985 | CA1184376A1 Electrical compass |
| 03/19/1985 | US4505054 Magnetic sensor mounting system |
| 03/12/1985 | US4503621 Solid state compass |
| 01/29/1985 | US4497034 Heading detecting apparatus |
| 01/29/1985 | US4495706 Alignment gage for dish antenna |
| 12/12/1984 | EP0127699A1 Earth magnetic field detector, in particular for a vehicle dead-reckoning apparatus |
| 12/11/1984 | CA1179122A1 Compensated magnetic sensor for use on highly magnetized vehicles |
| 11/28/1984 | EP0126089A1 Tactical dinghy compass. |
| 11/13/1984 | US4482255 Timepiece for displaying both time and orientation of the timepiece relative to the terrestrial magnetic field |
| 10/30/1984 | US4480226 Apparatus for indicating the direction of a vehicle with abnormal field sensing circuits |
| 10/03/1984 | EP0120691A2 Electrical compass |
| 09/18/1984 | US4472682 Apparatus for generating a parallel magnetic field within a magnetically shielded housing |
| 09/18/1984 | US4471534 Remote reading compass with 360 degree roll capability |
| 08/28/1984 | CA1173234A1 Orienteering compass |
| 08/14/1984 | US4464843 In a compass |
| 08/14/1984 | US4464842 Suspension systems for flux gate compasses |
| 07/31/1984 | US4462165 Three axis orientation sensor for an aircraft or the like |
| 07/31/1984 | US4462164 Orienteering compass |
| 07/11/1984 | EP0113221A1 Compass systems |
| 06/20/1984 | EP0111265A1 Solid state compass |
| 06/13/1984 | EP0110229A2 Remote reading compass with 360 degree roll capability |
| 06/12/1984 | US4453317 Magnetic compass |
| 05/30/1984 | EP0109422A1 Direction responsive apparatus for use in a magnetic field |
| 05/01/1984 | US4446509 Flashlight with compass means integral thereto |
| 05/01/1984 | US4445279 Magnetic course detector |
| 04/26/1984 | WO1984001623A1 Tactical dinghy compass |
| 04/17/1984 | US4442609 Vehicle orientation detecting device for an automotive vehicle or another vehicle |
| 03/27/1984 | US4438568 Recreational compass |
| 03/13/1984 | US4436421 For an equatorial mounting telescope |
| 02/15/1984 | EP0100625A2 Measuring system of magnetometer setting direction |
| 02/07/1984 | US4429469 For an automobile |
| 01/25/1984 | EP0007378B1 Gyroscopic method and apparatus for determining magnetic heading and attitude |
| 01/17/1984 | US4425717 Compass system |
| 01/17/1984 | US4425716 Floating non-gimballed compass |
| 01/10/1984 | US4424631 Electrical compass |
| 12/08/1983 | WO1983004304A1 Direction responsive apparatus for use in a magnetic field |
| 12/06/1983 | US4418480 Magnetic heading reference |
| 11/22/1983 | US4416067 Correction method and device for a magnetic field probe |
| 11/22/1983 | US4416066 Arrangement for orientation during journeys in land vehicles |
| 11/15/1983 | US4414754 High resolution compass card position decoder |
| 11/15/1983 | US4414753 Process for compensating the magnetic disturbances in the determination of a magnetic heading, and devices for carrying out this process |
| 11/08/1983 | US4413424 Azimuth determinating apparatus |
| 11/01/1983 | US4412387 Digital compass having a ratiometric bearing processor |
| 11/01/1983 | US4412386 Compass |
| 10/25/1983 | CA1155652A1 Pivoted magnetic compass with underslung magnets and dampening means |
| 09/20/1983 | US4404752 Clip-on compass |
| 09/20/1983 | CA1154131A1 Magnetic compass compensation system |
| 09/07/1983 | EP0087890A2 Electrical compass |
| 09/06/1983 | US4402142 Electronic compass for automotive vehicles |
| 09/06/1983 | US4402140 Telescope with compass |
| 08/24/1983 | EP0086618A1 Improvements relating to compasses |
| 08/23/1983 | US4399694 Gravity gradiometer compass |
| 08/23/1983 | US4399615 Direction indicator |
| 08/16/1983 | US4398353 Compass data converter |
| 08/16/1983 | US4398352 Compensated magnetic sensor for use on highly magnetized vehicles |
| 08/02/1983 | US4395828 Combination geodetic transit compass and signal mirror |
| 07/26/1983 | CA1150494A1 Terrestrial magnetism responsive method and device including a soft iron bar on a free end of a magnet |
| 07/19/1983 | US4393709 Direction detection apparatus |
| 07/06/1983 | EP0082845A1 Orienteering compass |
| 05/11/1983 | EP0078510A1 Time pice with an orientation device |
| 05/03/1983 | US4381610 Self-contained downhole compass |
| 04/12/1983 | US4379366 Direction finding system |
| 03/16/1983 | EP0073781A1 Portable information device. |