| Patents for G01C 1 - Measuring angles (3,035) |
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| 06/29/1993 | US5222708 Tripod safety collar |
| 06/09/1993 | CN1021126C Non-dial goniometry method for electronic theodolite |
| 06/01/1993 | US5216480 Surveying instrument |
| 05/18/1993 | US5212533 Light wave distance meter |
| 04/27/1993 | US5206499 Strapdown stellar sensor and holographic multiple field of view telescope therefor |
| 03/23/1993 | US5196900 Method and sensor for opto-electronic angle measurements |
| 02/10/1993 | EP0403585B1 Surveying instrument with receiver for a satellite position measurement system and process for operating it |
| 01/27/1993 | EP0524533A2 Aiming attachment for a telescopic sight of an optical system |
| 01/26/1993 | US5181654 Sunshine sensor and air conditioner for vehicle |
| 01/21/1993 | DE4123449A1 Telescope tube for geodetic instrument - has universal demountable holder for diode laser which can be aligned with telescope optical axis |
| 01/12/1993 | US5179421 Remote tracking system particularly for moving picture cameras and method |
| 01/05/1993 | US5177686 Method for determining the position of a space vehicle by means of star acquisition and star identification |
| 11/03/1992 | US5161242 Automated repeating sextant (ARS) |
| 11/03/1992 | US5159760 Device for aligning a geodetic instrument over a defined position mark |
| 10/28/1992 | CN1018861B Surveying instrument with contactless memory disc |
| 10/27/1992 | US5159401 Elevation-angle sensing, celestial navigation and surveying |
| 09/22/1992 | CA1307663C Opto-electronic angle measurement system |
| 09/17/1992 | WO1992015839A1 Apparatus and method for measuring deviation of a reference point from a datum |
| 08/26/1992 | EP0423162B1 Surveying system with an electro-optical total station and a mobile receiver station of a satellite positioning system |
| 08/19/1992 | EP0499320A1 Arrangement for the determination of the direction of a weak radiation-source and application to stellar observation |
| 08/19/1992 | EP0499319A1 Method for measuring the precise position of the energy centre of an image spot of a luminous object on a photosensor |
| 08/12/1992 | EP0308504B1 Response-rationing angle of arrival sensor |
| 07/29/1992 | EP0496568A1 Apparatus for determining the attitude of a celestial body orbiting spacecraft or satellite relative to the celestial body |
| 06/23/1992 | US5124844 Method and apparatus for locating celestial objects |
| 05/27/1992 | DE4138054A1 Automatic sextant system for navigational use - has detector of scale strips on instrument body and measures angle between two objects |
| 05/14/1992 | WO1992008105A1 Method and device for position measurement |
| 05/06/1992 | EP0483383A1 Method of tridimensional measuring, reference scale and self-illuminating reference scale for tridimensional measuring |
| 04/22/1992 | EP0481307A2 Surveying method utilizing global positioning system and surveying equipment used to perform this method |
| 04/22/1992 | EP0481278A1 Method and measuring device for locating points in space |
| 03/05/1992 | WO1992003700A1 Remote tracking system for moving picture cameras and method |
| 02/26/1992 | CN1059030A Rotary orient device of intersection survey system |
| 02/25/1992 | US5091869 Computer integrated floor plan system |
| 01/22/1992 | EP0466800A1 An arrangement for establishing or defining the position of a measuring point. |
| 01/15/1992 | EP0465584A1 An arrangement for performing position determination. |
| 01/15/1992 | CN2093380U Microcomputer-controlled phase shifter type shaft angle encoding device |
| 01/14/1992 | US5080307 Spacecraft earth-pointing attitude acquisition method |
| 12/31/1991 | US5077557 Surveying instrument with receiver for satellite position-measuring system and method of operation |
| 12/18/1991 | EP0461394A1 Spacecraft earth-pointing attitude acquisition method |
| 12/10/1991 | US5072105 Solar radiation detecting device and automobile air-conditioner using the same |
| 11/28/1991 | WO1991018258A1 Method of tridimensional measuring, reference scale and self-illuminating reference scale for tridimensional measuring |
| 11/26/1991 | US5067245 Instant placement down rod |
| 11/21/1991 | EP0457200A2 Method for measuring angles and characteristics using a gyroscope |
| 11/21/1991 | DE4015800A1 Gyroscopic measurement of angles and characteristics of deformation |
| 09/03/1991 | US5044086 Drum screw with measuring drum for a sextant |
| 08/14/1991 | DE4002480A1 Notch and bead sighting system for vehicle - with provision of distance indicators on windscreen |
| 08/13/1991 | US5038489 Posture measuring instrument |
| 07/16/1991 | US5031327 Apparatus for fine adjustment of a sextant |
| 04/24/1991 | EP0423162A1 Surveying system with an electro-optical total station and a mobile receiver station of a satellite positioning system. |
| 04/04/1991 | DE3931979A1 Finding geographical position by digital measurement of height of sun - storing digital time of day with digital sun height measurement to ascertain longitude and latitude for navigation |
| 03/19/1991 | US5000585 Apparatus for bearing a shaft |
| 03/13/1991 | CN2073121U Optical guiding arrangement |
| 03/12/1991 | US4999483 Sensor for detecting two dimensional angle of incidence of the sun |
| 01/30/1991 | EP0409875A1 Method and sensor for opto-electronic angle measurements. |
| 01/29/1991 | US4988193 Method and apparatus for measuring incident light angle relative to level |
| 01/29/1991 | US4988192 Laser theodolite |
| 01/24/1991 | DE3921122C1 Changing angle measurer for astronomical location - has computer-controlled stepper motor adjusting drum spindle via back-gearing arrangement so that control electronics can measure |
| 01/22/1991 | US4986255 Apparatus pursuing the sun |
| 12/27/1990 | EP0403585A1 Surveying instrument with receiver for a satellite position measurement system and process for operating it. |
| 12/13/1990 | DE3926314C1 Arrangement for adjusting sensor reference mirror - includes theodolite having auto-collimation unit on vertical holding plate and liq. holding plate from auto-collimator to reflect light |
| 11/27/1990 | US4972592 Sextant with adjustable handle |
| 11/22/1990 | EP0397892A1 Method for determining the coordinates of stars for preparation of a star catalogue |
| 11/21/1990 | CN1047143A Surveying opparatus |
| 11/06/1990 | US4967479 Position relocation device |
| 10/18/1990 | WO1990012284A1 An arrangement for performing position determination |
| 10/18/1990 | WO1990012282A1 An arrangement for establishing or defining the position of a measuring point |
| 10/04/1990 | DE4010117A1 Electronic surveying apparatus e.g. tacheometer or theodolite |
| 10/03/1990 | CN2063222U Dynamic angle measurer |
| 09/26/1990 | EP0388559A2 Method and apparatus for measuring incident light angle relative to a reference |
| 09/25/1990 | US4958927 Optical angle measuring instrument |
| 09/04/1990 | US4953303 Clinometer type apparatus |
| 08/09/1990 | DE3936966A1 Automatic target acquisition, esp. using theodolite - using aperture controlled by opto-electronic sensor signal for simplified measurement without focussing |
| 07/17/1990 | US4942292 Apparatus for following sun light |
| 06/14/1990 | WO1990006491A1 Method for determining the coordinates of stars for preparation of a star catalogue |
| 06/12/1990 | US4933550 Photodetector system with controllable position-dependent sensitivity |
| 05/23/1990 | EP0369416A2 Apparatus for bearing a shaft |
| 04/03/1990 | US4912853 Reticle plate and method for establishment of a north-oriented or south-oriented line by circumpolar orientation |
| 03/28/1990 | CN1040865A Non-dial goniometry method for electronic theodolite |
| 03/27/1990 | US4910875 Longitude location device |
| 03/13/1990 | US4907882 Surveying instrument for automatically taking measurements |
| 01/25/1990 | WO1990000719A1 Surveying system with an electro-optical total station and a mobile receiver station of a satellite positioning system |
| 01/25/1990 | WO1990000718A1 Surveying instrument with receiver for a satellite position measurement system and process for operating it |
| 01/17/1990 | EP0350866A1 Photodetector system with controllable position-dependent sensitivity |
| 12/26/1989 | US4888881 Direct height measuring device for surveying instruments |
| 11/01/1989 | CN2047006U Theodolite capable of surveying indined plane |
| 10/19/1989 | WO1989009922A1 Method and sensor for opto-electronic angle measurements |
| 10/17/1989 | US4874937 Digital sun sensor |
| 08/30/1989 | EP0330465A1 Device for indicating bearings in azimuth and inclination |
| 07/27/1989 | WO1989006783A1 Position measurement system |
| 07/19/1989 | CN2041420U Ring type vernier dial for theodolite |
| 06/21/1989 | CN2039830U Multi-function level measuring scale |
| 06/20/1989 | US4840445 System for locating an object in space |
| 03/29/1989 | EP0308504A1 Response-rationing angle of arrival sensor. |
| 03/22/1989 | CN2034681U Tv theodolite positioner |
| 02/22/1989 | CN2033116U Horizontal angular meter |
| 02/14/1989 | US4804832 Two directional angle of arrival system |
| 02/06/1989 | EP0239576A4 Navigation systems. |
| 12/21/1988 | EP0296016A1 System for determining the position of an object within a space |
| 12/14/1988 | EP0295152A2 Apparatus for following sun light |
| 10/20/1988 | WO1988008142A1 Response-rationing angle of arrival sensor |
| 09/07/1988 | EP0281518A2 Geodetic instrument |