| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
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| 11/09/1976 | US3990903 Hydrothermal cement and method of cementing well bores |
| 11/02/1976 | US3990005 Capacitive thickness gauging for ungrounded elements |
| 11/02/1976 | US3990004 Multi-frequency range operation of a network analyzer system |
| 11/02/1976 | US3989932 Inductive loop vehicle detector |
| 10/26/1976 | US3988678 Circuit arrangement for the measuring of group delay and attenuation distortions |
| 10/19/1976 | US3987425 Leakage resistance detector and alarm circuit |
| 10/19/1976 | US3987390 Method and apparatus for determining resistance at radio frequencies |
| 10/19/1976 | US3987362 Sensors |
| 10/12/1976 | US3986113 Two channel test instrument with active electronicphase shift means |
| 10/12/1976 | US3986110 Water depth measuring device |
| 10/12/1976 | US3986109 Self-calibrating dimension gauge |
| 10/12/1976 | US3986108 Apparatus and method for measuring capacitance |
| 10/12/1976 | US3986107 Resistance indicating electrical testing equipment for testing insulation under high voltage conditions |
| 10/05/1976 | US3984768 Apparatus for high voltage resistance measurement |
| 10/05/1976 | US3984766 Digital apparatus for rapidly detecting the growth of and identifying micro-biological organisms |
| 10/05/1976 | US3984765 Power outlet circuit tester with ground fault testing capability |
| 09/28/1976 | US3983554 Electric power distribution system including a Master Annunicator and Central Control Unit |
| 09/21/1976 | US3982182 Conductivity cell for particle study device |
| 09/14/1976 | US3980946 Apparatus for measuring the electrical conductivity of a liquid |
| 09/07/1976 | US3979667 Electrical indicators |
| 09/07/1976 | US3979666 Method and apparatus for evaluating properties of carbon fibers using capacitance sensing |
| 09/07/1976 | US3979665 Conductivity monitoring system |
| 09/07/1976 | US3979642 Electronic protective circuit |
| 09/07/1976 | US3979581 Method and arrangement for determining the mass of tobacco or the like by capacitance and attenuation measurements in a resonant high frequency oscillator circuit |
| 08/31/1976 | US3978465 Line isolation monitor |
| 08/31/1976 | US3978402 Apparatus for producing an electrical output signal whose magnitude is linearly representative of the value of an unknown resistance |
| 08/24/1976 | US3976987 Dual channel dynamic line isolation monitor |
| 08/24/1976 | US3976052 Respiration monitor |
| 08/17/1976 | US3975719 Transducer for converting a varying reactance signal to a DC current signal |
| 08/17/1976 | US3975679 Direct-reading swept-frequency slotted line system with slope correction |
| 08/10/1976 | US3974443 Conductive line width and resistivity measuring system |
| 08/03/1976 | US3973187 Sensing capacitance and thickness of insulated cable to provide outputs related to weigh and percent voids |
| 08/03/1976 | US3973185 Circuit for monitoring the inductance of an inductive load to indicate occurrence of a fault |
| 08/03/1976 | US3973112 System for determining transfer function |
| 07/27/1976 | US3971365 Bioelectrical impedance measuring system |
| 07/20/1976 | US3971007 Line isolation monitor |
| 07/20/1976 | US3970926 Method and apparatus for measuring the group delay characteristics of a transmission path |
| 07/20/1976 | US3970925 Direct reading reactance meter |
| 07/20/1976 | US3970924 Apparatus for detecting faults in magnet wire insulation without thermally damaging the insulation and which does not respond to impedance indications above a predetermined threshold value |
| 07/20/1976 | US3970923 Apparatus for measuring sheet resistivity of semiconductor materials and diffused layers |
| 07/20/1976 | US3970920 Measuring arrangement for an apparatus for electrostatic coating of grounded objects for measuring the ground resistence |
| 07/13/1976 | US3969711 Line isolation monitor and alarm |
| 07/13/1976 | US3969669 Method and apparatus for continuously determining the internal resistance of an electrolysis cell |
| 07/06/1976 | US3968428 Portable soil moisture tester |
| 07/06/1976 | US3968427 Group delay measurement apparatus and method |
| 06/29/1976 | US3967198 Method and apparatus for electrically determining plant water status |
| 06/29/1976 | US3967197 Method for detecting moisture in multiple layer roofs |
| 06/22/1976 | US3965424 Method and apparatus for tracking an incrementally sweeping generator by a frequency selective receiver |
| 06/22/1976 | US3965416 Dielectric-constant measuring apparatus |
| 06/22/1976 | US3965414 Temperature compensated conductivity measuring system |
| 06/22/1976 | US3964315 Apparatus including novel bridge circuit |
| 06/15/1976 | US3963979 Liquid conductivity measuring apparatus |
| 06/08/1976 | US3962629 Device for measurement of parameters of compound electric circuit elements |
| 06/01/1976 | US3961247 Linear output moisture meter with temperature compensator |
| 06/01/1976 | US3961246 Capacitance method of monitoring insulation dryness of an electrical induction apparatus |
| 06/01/1976 | US3961224 Transient-free isolation monitor |
| 05/25/1976 | US3959723 Lumber moisture measurement apparatus which is less sensitive to lumber movement and spacing |
| 05/18/1976 | US3958176 Method for measuring suitability of aluminum for use in certain propellants |
| 05/11/1976 | US3956696 Apparatus for measuring the resistance of an inductor, having time constant compensation |
| 04/27/1976 | US3953796 Method and apparatus for measuring electrical conductivity |
| 04/27/1976 | US3953790 Conductivity monitoring system |
| 04/20/1976 | US3952248 D.C. voltage ratio measuring circuit |
| 04/20/1976 | US3952245 Calibrated quadraxial system for measuring shielding transfer impedance |
| 04/13/1976 | US3950742 Adjustable line isolation monitor |
| 04/13/1976 | US3950697 Apparatus for measuring phase, amplitude and frequency characteristics of an object |
| 03/30/1976 | US3947765 Automated electrical resistivity measuring apparatus for semiconductor crystal rods |
| 03/30/1976 | US3947760 Integrating component measuring device |
| 03/30/1976 | US3947759 Leakage current monitoring system and method |
| 03/23/1976 | US3946309 Cell for measuring electrical resistivity of a liquid |
| 03/23/1976 | US3946299 Battery state of charge gauge |
| 03/16/1976 | US3944922 Resistivity measuring heads |
| 03/16/1976 | US3944917 Electrical sensing circuitry for particle analyzing device |
| 03/16/1976 | US3944916 Moisture indicating plant receptacle |
| 03/16/1976 | US3944859 Bridge-balance detection circuit |
| 03/09/1976 | US3943439 Capacitor test apparatus and method |
| 03/09/1976 | US3943434 Arrangement for measuring temperatures |
| 03/02/1976 | US3942108 Digital test instrument |
| 03/02/1976 | US3942107 Method and apparatus employing thin conductive films on flexible nonconductive sheets for non-destructive measurement of electrical characteristics |
| 03/02/1976 | US3940996 Method and device for remotely monitoring electrically conductive liquids |
| 02/17/1976 | US3939403 Device for maintaining constant the temperature of a coil fed by an A.C. current source |
| 02/03/1976 | US3936738 Method of and apparatus for measuring the amount of coating material applied to substrates |
| 02/03/1976 | US3936737 Corrosion monitoring system |
| 02/03/1976 | US3936735 Circuit having audio output pulse rate related to measured resistance and output pulse modulation related to measured capacitance |
| 02/03/1976 | US3936734 Method for contactless measurement of conductivity and/or temperature on metals by means of eddy currents |
| 01/20/1976 | US3933046 Logarithmic resistance-to-frequency converter |
| 01/13/1976 | US3932806 Surge comparison type coil tester |