| Patents for G01C 9 - Measuring inclination, e.g. by clinometers, by levels (8,378) |
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| 12/26/1989 | US4888880 Electrician's level |
| 12/26/1989 | US4888875 Level for weightlifting |
| 12/20/1989 | CN2049761U Level scale |
| 12/19/1989 | US4888540 Electronic torquer interface and erection control circuit |
| 12/06/1989 | EP0344934A1 Digital inclinometer |
| 12/06/1989 | EP0344412A1 Process and device for the continuous measuring of the relative height of a long object driven into the earth |
| 12/05/1989 | US4885535 Magnetic tilt sensor with permanent magnet surrounding magnetic sensing element |
| 11/23/1989 | DE3815938A1 Acceleration sensor for vehicles |
| 11/15/1989 | EP0341812A1 Level/Plumb indicator with tilt compensation |
| 11/08/1989 | EP0340507A2 Antitheft warning apparatus for vehicles |
| 11/02/1989 | WO1989010623A1 Inclination and inertia indicating apparatus |
| 11/02/1989 | EP0339046A1 Leukotriene b 4? analogs. |
| 11/01/1989 | CN2047008U Household horizontal debugging instrument |
| 11/01/1989 | CN2047007U Musical type leveler |
| 10/31/1989 | US4877201 Ballistic projectiles |
| 10/31/1989 | US4876799 Level sensing unit and a level indicating device thereon |
| 10/31/1989 | US4876798 Level with illuminated bubble vials |
| 10/18/1989 | CN1036452A Automatic controller for photographing at well bottom |
| 10/05/1989 | DE3809126A1 Device for displaying changes in level in a motor vehicle |
| 10/04/1989 | EP0335117A2 Device for detecting positional changes relative to a vertical reference direction in buildings or building soil |
| 09/27/1989 | CN2045103U Level with constant air-bulb |
| 09/26/1989 | US4869591 Method of optically measuring relative angular movement |
| 09/26/1989 | US4869590 Geodetic instrument |
| 09/19/1989 | US4866850 Clinometer with rolling liquid conductor |
| 09/13/1989 | CN2044253U Verticle indicator for hydraulic lift |
| 09/12/1989 | US4866379 Tilt sensor having central first bottom surface and second contiguous bottom surface at an angle thereto |
| 09/08/1989 | WO1989008236A1 Clinometer/accelerometer and method |
| 09/07/1989 | DE3805989A1 Spirit-level |
| 09/05/1989 | US4863022 Level package with sleeve positioning element |
| 09/05/1989 | US4862595 Extension level |
| 08/29/1989 | US4862172 Computer control apparatus including a gravity referenced inclinometer |
| 08/29/1989 | US4861981 Optoelectronic theodolite sensor |
| 08/29/1989 | US4860459 Bubble level |
| 08/29/1989 | CA1258765A1 Apparatus for measuring the lateral inclination of a supporting surface by means of a vehicle drivable thereon |
| 08/22/1989 | US4858331 Method and apparatus for measurement of caster, king-pin-inclination, and camber on motor vehicles |
| 08/09/1989 | EP0326841A2 Overturning and accelerating sensor |
| 08/08/1989 | US4854047 Inclinometer of liquid in thin graduated cylinder |
| 08/03/1989 | DE3802461A1 Measuring instrument for measuring angles |
| 08/02/1989 | EP0326256A1 Electronic surface alignment system |
| 08/01/1989 | US4852266 Angle measuring adapter |
| 07/26/1989 | EP0325196A1 Device for measuring the altitude distance travelled by a road vehicle, particularly a bicycle |
| 07/20/1989 | DE3800155A1 Inclinometer |
| 07/20/1989 | DE3800154A1 Inclinometer |
| 07/18/1989 | US4848003 Positioning device |
| 07/11/1989 | US4846954 Inclination sensor |
| 07/05/1989 | EP0322868A2 Magnetic tilt sensor |
| 07/05/1989 | CN2040635U Test rule for building |
| 07/04/1989 | US4843725 Indicating a reference direction |
| 07/04/1989 | US4843724 Spirit level |
| 06/29/1989 | WO1989005961A1 Electronic tilt measuring system |
| 06/27/1989 | USRE32962 Level with electronic signals |
| 06/21/1989 | EP0321127A1 Electronic tilt measuring system |
| 06/21/1989 | CN2039830U Multi-function level measuring scale |
| 06/20/1989 | CA1256208A1 High resolution digital inclinometer |
| 05/30/1989 | US4833788 Univeral level light adapter |
| 05/23/1989 | US4831879 Sensor for automatic release of occupant protective devices in the event of an accident |
| 05/16/1989 | US4829676 Hands-free level indicating device |
| 05/10/1989 | CN2037466U Disk level-meter |
| 05/09/1989 | US4827624 Electronic level |
| 04/26/1989 | EP0312530A1 Electrical detector and utilizer of inclination data |
| 04/25/1989 | US4824367 Dental drill alignment indicator |
| 04/19/1989 | EP0312171A2 Air-bubble level for portable tools |
| 04/12/1989 | CN2035871U Multiple angle measuring device in three dimension |
| 04/11/1989 | US4821218 Method and apparatus for determining at least one characteristic value of movement of a body |
| 03/29/1989 | EP0308404A1 Road paver-finisher with a combination of axles with steering wheels and crawler units. |
| 03/28/1989 | CA1251634A1 Magnetic single shot inclinometer |
| 03/22/1989 | CN1031892A Six-contact type high-precision planeness-measuring method and its apparatus |
| 03/15/1989 | CN2034265U Combined foldable type three-use ruler |
| 03/14/1989 | US4812812 Apparatus and method for determining the position and orientation of a remote object |
| 03/14/1989 | US4812654 Two-axis quartz fiber passive tilt meter |
| 03/14/1989 | US4811492 Cant angle sensor assembly |
| 03/14/1989 | US4811491 Two-axis differential capacitance inclinometer |
| 03/08/1989 | EP0306321A2 Two-axis inclinometer |
| 03/07/1989 | CA1250924A1 Tilt sensor for resolving left-right ambiguity in underwater acoustic detection systems |
| 02/28/1989 | US4807966 Sighting apparatus |
| 02/16/1989 | DE3722318A1 Measurement scale (balance) |
| 02/15/1989 | EP0303352A2 The method of optically measuring relative angular movement |
| 02/15/1989 | EP0303038A2 Electrolytic switch having electrostatic shield |
| 02/08/1989 | EP0302821A1 Device for inclination measurement |
| 02/07/1989 | US4803426 Magnetic tilt sensor |
| 02/01/1989 | CN2031917U Horizontal slope meter |
| 02/01/1989 | CN2031916U Electronic automatic level-tracking testing apparatus |
| 01/25/1989 | CN1030640A Inclination sensor |
| 01/24/1989 | US4800542 Tilt sensor for resolving left-right ambiguity in underwater acoustic detection systems |
| 01/19/1989 | DE3719414A1 Self-indicating rigid variator |
| 01/18/1989 | CN2031084U Vertical level-meter |
| 01/18/1989 | CN1030474A Multipurpose level |
| 01/17/1989 | US4798087 Inclination detector |
| 01/05/1989 | DE3721093A1 Angle measurement device |
| 01/03/1989 | US4794703 Navigational instrument for controlling the stability of a mobile device |
| 01/03/1989 | US4794701 Level device for a chainsaw |
| 12/29/1988 | WO1988010408A1 Digital inclinometer |
| 12/28/1988 | EP0296565A2 Tilt sensor |
| 12/28/1988 | CN88211304U Gradient measuring ruler |
| 12/28/1988 | CN88206789U Mutifunctional level ruler with point-lowering device |
| 12/28/1988 | CN88104645A Bubble capacitance type double-coordinate gradient sensor |
| 12/21/1988 | CN88204953U Multi-purpose instrument for measuring inclination |
| 12/14/1988 | CN88200450U Installation instrument of building equipment |
| 12/07/1988 | EP0293501A1 Gradient-meter for motor-driven vehicles for checking the gradient of the road they are running on |
| 12/07/1988 | EP0293385A1 Goniometer, in particular water level |