| Patents for G01C 15 - Surveying instruments or accessories not provided for in groups (9,775) |
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| 09/12/1990 | EP0253017B1 System and method of surveying |
| 09/07/1990 | WO1990010193A1 Arrangement and process for determining movements in structures |
| 09/04/1990 | CA1273486A1 Self leveling transmitter for laser alignment systems |
| 08/28/1990 | CA1273194A1 Device for marking out land |
| 08/14/1990 | US4947692 Apparatus for detecting positional changes in relation to a vertical reference direction in buildings or in building subsoil |
| 08/07/1990 | US4947324 Steering control system for moving vehicle |
| 08/01/1990 | EP0379918A2 Carrying support for a measuring apparatus, in particular for a laser direction finder |
| 07/24/1990 | US4943158 Sensor controlled leveling device |
| 07/18/1990 | EP0378142A2 Laser direction finder |
| 07/11/1990 | EP0377480A2 Procedure for setting up and keeping up-to-date data files for road traffic |
| 07/05/1990 | DE3900030A1 Light-emitting diode forming a measuring point |
| 06/26/1990 | US4936678 Position detection system for use with agricultural and construction equipment |
| 06/19/1990 | US4934812 Light detector |
| 06/12/1990 | US4932778 Autokinesis free optical instrument |
| 05/30/1990 | EP0370060A1 Optical instrument |
| 05/22/1990 | US4926563 Theodolite target adaptor and method of use |
| 05/22/1990 | US4926561 Tripod stand for a surveyor's rod |
| 05/22/1990 | CA1269436A1 Mobile machine for measuring track parameters |
| 05/17/1990 | WO1990005281A1 A laser beam receiver |
| 05/16/1990 | EP0368739A1 Boundary stone for supporting polygonal markers or for other applications |
| 05/15/1990 | US4926042 Method of and device for detecting light receiving position utilizing optical fibers |
| 05/08/1990 | US4924450 Ultrasonic ranging and data telemetry system |
| 05/02/1990 | EP0366150A1 Datum beam projecting apparatus for use with surveying equipment |
| 05/01/1990 | US4920657 Assembly for plumb bob and line |
| 04/10/1990 | CA1267707A1 Above-ground arrangement for and method of locating a discrete inground boring device |
| 04/05/1990 | DE3833153A1 Method for the detection of the centre of a laser beam projected by a levelling device (so-called construction laser) by means of at least two laser-sensitive signal-transmitting receiving elements arranged in a mirror image about a "zero line", and device for carrying out the method |
| 04/03/1990 | US4912851 Level/plumb indicator with tilt compensation |
| 03/27/1990 | US4912643 Position sensing apparatus |
| 03/27/1990 | US4911548 Determination of one or more spatial parameters of an object |
| 03/21/1990 | CN2054900U Five purposes level ruler |
| 03/20/1990 | US4908948 Precision optical square instrument |
| 03/14/1990 | EP0358368A1 Laser based measurement system |
| 03/13/1990 | US4908704 Method and apparatus for obtaining an object image and distance data of a moving object |
| 03/13/1990 | US4907882 Surveying instrument for automatically taking measurements |
| 03/13/1990 | US4907879 Remote controlled land surveying assistance device for path response alignment to beam energy |
| 03/13/1990 | US4907874 Detection and display device |
| 02/22/1990 | DE3833203C1 Device for the numeric acquisition of coordinates for CAD systems |
| 02/20/1990 | US4902130 Laser ray projector and remote measuring device comprising at least two of these projectors |
| 02/20/1990 | CA1265923A1 Laser alignment system with modulated field |
| 02/15/1990 | DE3827619A1 Sensor-controlled tracking device, especially for the levelling of ground surfaces |
| 02/15/1990 | DE3827618A1 Sensor-controlled tracking device |
| 02/15/1990 | DE3827617A1 Sensor-controlled tracking device |
| 02/15/1990 | DE3827459A1 Method and equipment for setting up and generating a spatial orthogonal measuring network, especially for setting up dimensions in the framework of structural surveys |
| 02/15/1990 | DE3827458A1 Method and device for the determination of the spatial coordinates of any arbitrary measuring point |
| 02/13/1990 | US4899452 Stepping staff |
| 02/07/1990 | EP0353968A1 Detection and display device |
| 02/06/1990 | US4898452 Apparatus for mounting target plate on reflector for electronic distance meter |
| 01/30/1990 | US4897038 Cartographic device |
| 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 |
| 01/23/1990 | US4895440 Laser-based measurement system |
| 01/23/1990 | CA1264542A1 Signal for industrial surveys |
| 01/16/1990 | US4894677 High-power illumination device for a camera |
| 01/16/1990 | US4894662 Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellites |
| 01/16/1990 | US4893922 Measurement system and measurement method |
| 01/09/1990 | US4891888 Auxiliary tool for carefully levelling finishing floors |
| 12/26/1989 | US4889997 Process and device for measuring and processing the displacements between two or more points in structures, buildings, machinery or the like |
| 12/26/1989 | US4888881 Direct height measuring device for surveying instruments |
| 12/20/1989 | CN2049762U Hanging type vertical point-aligning device |
| 12/13/1989 | CN2049347U Cylindric type stadia rod |
| 12/05/1989 | US4884939 Self-contained laser-activated depth sensor for excavator |
| 12/05/1989 | CA1263722A1 Passive marker structure |
| 11/30/1989 | WO1989011401A1 Base point anchor |
| 11/29/1989 | CN2048575U Weight liner |
| 11/15/1989 | EP0341812A1 Level/Plumb indicator with tilt compensation |
| 11/14/1989 | US4879816 Combination range pole and bubble-level therefor |
| 11/14/1989 | US4879815 Alignment apparatus |
| 11/09/1989 | DE3814466A1 Verfahren und vorrichtung zum feststellen der relativen lage einer bezugsachse eines objekts bezueglich eines referenzstrahls, insbesondere eines laserstrahls Method and apparatus for detecting the location relative to a reference axis of an object relative to a reference beam, in particular a laser beam, |
| 11/02/1989 | WO1989010538A1 Method for the survey of building measurements by telemetry |
| 11/02/1989 | WO1989010535A1 Device for finding the relative position of the reference axis of an object relative to a reference beam, a laser beam in particular |
| 10/24/1989 | US4875760 Reflective prism assembly |
| 10/24/1989 | US4875291 Rotating reflector prism and target |
| 10/17/1989 | US4874238 Method and device for measurement with laser beam |
| 10/10/1989 | US4873449 Process and apparatus for three-dimensional surveying |
| 10/05/1989 | DE3809724A1 Device for underground marking of surveying points |
| 10/05/1989 | DE3808972A1 Device for continuous tracking and position measurement of an object |
| 10/04/1989 | EP0335117A2 Device for detecting positional changes relative to a vertical reference direction in buildings or building soil |
| 09/26/1989 | US4870422 Method and system for determining position from signals from satellites |
| 09/26/1989 | CA1259976A1 Construction string reel |
| 09/19/1989 | US4866849 Surveying target with high intensity discharge lamp |
| 08/31/1989 | DE3805450A1 Arrangement and method for determining length of flight |
| 08/31/1989 | DE3804875A1 Swinging holder for reflectors for measurements with electrooptical tacheometers |
| 08/22/1989 | US4860018 Continuous wave interference rejection for reconstructed carrier receivers |
| 08/08/1989 | US4854704 Optical automatic levelling apparatus |
| 08/08/1989 | US4854703 Laser beam levelling instruments |
| 08/01/1989 | US4852983 Distance simulator |
| 08/01/1989 | US4852265 Level/plumb indicator with tilt compensation |
| 07/27/1989 | WO1989006783A1 Position measurement system |
| 07/26/1989 | CN2041805U Benchmark scalar potential tower ruler |
| 07/13/1989 | DE3833778A1 Arrangement for level measurement, especially for geometric levelling |
| 07/11/1989 | US4845856 Method and apparatus for aligning equipment on board a carrier vehicle and particularly on board an aircraft |
| 07/05/1989 | EP0323024A1 Depth sensor for excavator |
| 06/21/1989 | EP0321048A1 High power illuminating device for a camera |
| 06/20/1989 | US4841136 Sighting apparatus with automatic correction mechanism |
| 06/20/1989 | US4839967 Surveying method allowing greater freedom in positioning the surveying instruments |
| 06/14/1989 | CN2039409U Simple gauge for eaves |
| 06/13/1989 | US4838730 Portable screed with floating screed plate |
| 06/06/1989 | US4837717 Device for measuring substantially vertical, circular-cylindrical objects |
| 06/06/1989 | US4836669 Apparatus and method for projection of reference planes of light |
| 05/30/1989 | CA1254968A1 Object locating system having at least one passive sight |