| Patents for G01C 9 - Measuring inclination, e.g. by clinometers, by levels (8,378) |
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| 10/27/1981 | CA1111239A1 Photoelectric borehole surveying apparatus with a magnetic compass |
| 10/21/1981 | EP0037899A1 Method and device for measuring angles of inclination or a change of angles in a piling up or the like |
| 10/20/1981 | US4295279 Hand tool leveling apparatus |
| 10/14/1981 | EP0037626A2 Acceleration or inclination measuring instrument |
| 10/06/1981 | US4292861 Earth self-orienting apparatus |
| 10/06/1981 | US4292741 Universal level vial holder |
| 09/09/1981 | EP0035340A2 Improved clinometer |
| 08/18/1981 | US4283798 Attitude indicator for divers |
| 08/18/1981 | CA1107060A1 Chord liner using angle measurement |
| 08/11/1981 | CA1106593A1 Four way corner level |
| 07/28/1981 | US4280366 Gas driven gyroscope |
| 07/14/1981 | US4278854 Tilt indicating device |
| 07/14/1981 | US4277895 Apparatus for indicating angular position in a vertical direction |
| 07/08/1981 | EP0031370A1 Tiltmeter for geophysical prospecting by measurement of earth tides |
| 06/23/1981 | US4274208 Precision bending level |
| 06/23/1981 | US4274203 Level device |
| 06/16/1981 | CA1103051A1 Load weighing device |
| 05/19/1981 | US4267641 Radiographic film inclinometer |
| 05/12/1981 | CA1101123A1 Aircraft pitch attitude signal generator |
| 05/05/1981 | US4265027 Automatic self-leveling instrument mount |
| 04/28/1981 | CA1100212A1 Tilt detection-system |
| 03/03/1981 | US4254334 Inclinometer |
| 03/03/1981 | US4253242 Digital angle indicator |
| 02/10/1981 | CA1095622A1 Combined angular displacement measuring system and multiplier |
| 01/28/1981 | EP0023190A1 Mounting assembly for a top viewable liquid vial level |
| 01/22/1981 | WO1981000150A1 Tiltmeter for geophysical prospecting by measurement of earth tides |
| 01/14/1981 | EP0022328A1 A cant angle sensor |
| 01/13/1981 | US4244547 Theodolite leveling means |
| 01/13/1981 | US4244117 Electronic inclination gauge |
| 01/13/1981 | US4244116 Devices for measuring the azimuth and the slope of a drilling line |
| 01/07/1981 | EP0020627A1 Suspension device for angle indicator |
| 12/30/1980 | US4241995 Apparatus for measuring amount of displacement |
| 12/30/1980 | US4241510 Aid for hanging pictures |
| 12/16/1980 | US4238889 Devices for the azimuth and slope scanning of a drilling line |
| 11/18/1980 | CA1089948A1 Digital level indicator |
| 11/04/1980 | US4231257 Slope sensor for a vehicle |
| 10/28/1980 | US4229885 Structure of vertical and horizontal surveying instrument |
| 09/02/1980 | US4219940 Angular accelerometer stabilized pendulum |
| 08/26/1980 | US4218829 Frame-setting apparatus |
| 08/06/1980 | EP0013683A1 Level-meter marker protractor |
| 07/29/1980 | US4214485 Electro-mechanical transducer |
| 07/08/1980 | US4212006 Crane load alarm with compensation for direction of rope movement |
| 06/24/1980 | US4208803 Top viewable vial level |
| 06/24/1980 | US4208802 Level indicating device for wall-mounted pictures |
| 06/12/1980 | WO1980001202A1 Suspension device for angle indicator |
| 06/10/1980 | US4206550 Point-to-point self-plumbing apparatus and method |
| 06/03/1980 | US4205454 Combined distance and gradient gauging apparatus |
| 05/28/1980 | EP0011087A1 Alarm device, particularly for automotive vehicles |
| 05/27/1980 | US4204334 Precision gravity responsive angle indicator |
| 05/13/1980 | CA1077597A1 Surface deflection sensor |
| 04/22/1980 | US4198760 Double punch inclinometer |
| 04/08/1980 | US4196524 Head movement indicating device |
| 04/08/1980 | CA1075342A1 Attitude indicator for divers |
| 03/25/1980 | US4194295 Level and angle attachment for a carpenter's folding ruler |
| 03/18/1980 | US4194237 Leveling plate and method of utilizing same |
| 03/11/1980 | US4192181 Casing assembly probes |
| 03/11/1980 | CA1073549A1 Pointing error compensating device |
| 03/04/1980 | CA1073078A1 Tilt limiting detecting apparatus |
| 02/26/1980 | US4189844 Chalk line protracting tool |
| 02/20/1980 | EP0008208A2 A vertical indicating device and a device for maintaining a stable vertical in two dimensions |
| 02/20/1980 | EP0007967A1 Inclination indicator for gripping means on loading machines |
| 02/19/1980 | US4189726 Automatic orientation circuit indicator device for portable power tools and the like |
| 02/19/1980 | US4188729 Scribing protractor |
| 02/05/1980 | CA1071204A1 Cerium sulfadiazine |
| 01/08/1980 | US4182046 Electronic level and protractor |
| 12/11/1979 | CA1067689A1 Spirit level with top window mounting |
| 12/04/1979 | CA1067603A1 Compensated toroidal accelerometer |
| 12/04/1979 | CA1067602A1 Temperature compensated toroidal accelerometer |
| 10/30/1979 | US4172327 Attitude indicator for divers |
| 10/02/1979 | CA1063696A1 Damped pendulum angular position |
| 09/25/1979 | US4168578 Four way corner level |
| 09/18/1979 | US4167818 Electronic inclination gauge |
| 09/06/1979 | WO1979000672A1 Air level |
| 08/28/1979 | US4166291 Chord liner using angle measurement |
| 08/21/1979 | US4164817 Conduit bending level |
| 08/14/1979 | US4164077 Level indicating devices |
| 08/07/1979 | US4163325 Verticality sensors |
| 07/03/1979 | US4159577 Device for indicating a horizontal direction and one or more angle sectors about said direction |
| 06/26/1979 | US4159422 Temperature stable displacement sensor with fine resolution |
| 06/14/1979 | WO1979000330A1 Inclination indicator for gripping means on loading machines |
| 06/12/1979 | US4157619 Inclination and direction responsive apparatus |
| 05/22/1979 | CA1055186A1 Method of modifying the physical properties of urethane elastomers |
| 05/15/1979 | US4154001 Electric hand drill aligning level |
| 05/15/1979 | US4154000 Remote level sensing instrument |
| 05/08/1979 | US4152839 Level indicating device |
| 05/08/1979 | US4152838 Straight edge level |
| 05/01/1979 | US4151650 Level assembly |
| 04/24/1979 | US4150492 Precision level |
| 04/17/1979 | US4149321 Mercury leveling instruments |
| 03/20/1979 | US4144653 Inclinometer |
| 02/27/1979 | US4141151 Drill leveling arrangement |
| 02/13/1979 | US4139287 Projector leveling and focusing aid and method of using same |
| 02/06/1979 | CA1048122A1 Tilt responsive device for setting and retaining a fixed direction |
| 01/30/1979 | US4136962 Apparatus for orienting and maintaining the orientation of construction equipment |
| 01/09/1979 | US4133116 Ground slope analyzer |
| 01/09/1979 | US4133115 Multiple vial universal flange level assembly for flanged pipes and the like |
| 01/02/1979 | US4132004 Remote fixture aiming device |
| 12/26/1978 | US4130943 Extension level |
| 12/26/1978 | US4130942 Borehole surveying apparatus |
| 12/12/1978 | US4129852 Slope detector for indicating flat tires and the like |