| Patents for G01C 9 - Measuring inclination, e.g. by clinometers, by levels (8,378) |
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| 12/12/1978 | CA1044009A1 Level with adjustable bubble-indicating means for use at various angles |
| 11/28/1978 | US4126944 Disposable switch plate and receptacle cover spirit level |
| 11/21/1978 | US4125944 Level for power hand drill |
| 11/14/1978 | US4124940 Level and method of assembling same |
| 10/24/1978 | US4121347 Device for setting and retaining a fixed direction |
| 09/26/1978 | CA1039406A2 Well surveying apparatus |
| 09/12/1978 | US4112585 Level indicating instrument |
| 09/12/1978 | US4112584 Telescope level adjusting means |
| 09/12/1978 | CA1038451A1 Feeler element for the electrical measurement of inclinations |
| 09/05/1978 | US4110912 Triaxial deflection meter |
| 09/05/1978 | CA1037704A1 Liquid for a feeler element for the electrical measurement of inclinations |
| 08/29/1978 | US4110609 Tilt limiting detecting apparatus |
| 08/29/1978 | US4109392 Pocket level |
| 08/15/1978 | US4106207 Point to point self-leveling plumbing device |
| 08/01/1978 | US4103430 Viewing device for a bubble level |
| 07/25/1978 | US4102055 Sensitive inclinometer |
| 07/18/1978 | US4100681 Picture frame leveling device |
| 07/11/1978 | US4099334 Dip angle data transmitter |
| 07/11/1978 | US4099331 Plumb-rule |
| 06/27/1978 | US4096638 Pendulum |
| 06/27/1978 | US4096637 Orienting device for dental facebow or pantograph |
| 06/13/1978 | US4095271 Aircraft pitch attitude signal generator |
| 06/13/1978 | US4094073 Angle detector |
| 05/23/1978 | US4091326 Method and apparatus for equipotential plane detection |
| 05/23/1978 | US4090306 Magnified dial level indicator with magnetic swing plate |
| 05/09/1978 | US4087920 Two-fluid tiltmeter |
| 04/25/1978 | US4085515 Alignment device |
| 04/18/1978 | US4085375 Combined angular displacement measuring system and multiplier |
| 03/21/1978 | US4079521 Electrically actuated level |
| 03/21/1978 | US4079520 Level bubble for a golf club |
| 03/14/1978 | US4079383 Pointing error compensating device |
| 03/07/1978 | US4078058 Cerium sulfadiazine for treating burns |
| 03/07/1978 | US4077132 Digital level indicator |
| 02/28/1978 | US4076394 Hinges for a spectacle frame |
| 02/14/1978 | US4073062 Level |
| 01/31/1978 | US4070764 Level and collapsible ruler |
| 01/24/1978 | US4069592 Slope measuring and indication means and the like |
| 01/24/1978 | US4069591 Elastomeric inclinometer |
| 01/17/1978 | US4068386 Line level |
| 01/10/1978 | US4067117 Grade checking tool |
| 01/03/1978 | US4066232 Clamp-on level holder |
| 12/20/1977 | US4063366 Grade level |
| 12/20/1977 | US4063365 Orientation detection and alignment method and apparatus |
| 11/08/1977 | US4057661 Method of manufacturing a thin-film electrode |
| 11/08/1977 | US4057595 Polyurethane |
| 10/11/1977 | US4053239 Axis definition apparatus |
| 08/30/1977 | US4044473 Tilt detector and system |
| 07/19/1977 | US4035923 Stand-off arrangement for levels |
| 07/12/1977 | US4034937 Position reference devices |
| 07/12/1977 | US4034481 Instrument which is sensitive to accelerations |
| 06/14/1977 | US4028815 Temperature compensated toroidal accelerometer |
| 06/07/1977 | US4028260 Liquid for a feeler element for the electrical measurement of inclinations |
| 06/07/1977 | US4027399 Positional sensing |
| 05/24/1977 | US4024823 Automatic blade angle controller system |
| 05/17/1977 | US4023413 Device for measuring accelerations, particularly accelerations due to gravity |
| 05/17/1977 | US4023278 Two axis attitude sensor |
| 03/15/1977 | US4011660 Spirit level with top window mounting |
| 01/18/1977 | US4003134 Automatic lighted level and angle finder |
| 12/21/1976 | US3999064 Angular displacement measuring apparatus with strobe means |
| 12/21/1976 | US3997976 Sensitive tiltmeter |
| 11/23/1976 | US3992951 Compensated toroidal accelerometer |
| 11/09/1976 | US3990659 Low cost attitude position sensor for high speed vehicles |
| 11/02/1976 | US3988839 Model aircraft incidence gauge |
| 10/12/1976 | US3985033 Apparatus for erecting a true vertical axis |
| 10/12/1976 | US3984919 Leveling device |
| 10/12/1976 | US3984918 Inclinometer |
| 07/06/1976 | US3967799 Head up display and pitch generator |
| 04/20/1976 | US3950860 Building block laying level indicating device |
| 04/20/1976 | US3950859 Angular displacement measuring apparatus |
| 04/06/1976 | US3947970 Roll alignment gauge |
| 03/30/1976 | US3946494 Toroidal electrolytic angle transducer |
| 03/23/1976 | US3945129 Instrument for the indication or checking of the angular position of an object |
| 03/23/1976 | US3945128 Dynamic vertical angle sensor |
| 02/17/1976 | US3938258 Vertical reference device |
| 02/17/1976 | US3938255 Cantilever-type inclinometer |
| 02/10/1976 | US3937078 Sensing apparatus for inclinometers |
| 02/03/1976 | US3935643 Methods of and means for measuring angles |
| 01/27/1976 | USRE28694 Fluidic clinometer control apparatus |