| Patents for G01R 31 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere (152,264) | 
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| 12/26/1989 | US4889242 Device for testing and sorting electronic components, more particularly integrated circuit chips | 
| 12/26/1989 | US4889000 Electric generator inspection system and motor controller | 
| 12/26/1989 | US4888996 DC motor operated valve remote monitoring system | 
| 12/20/1989 | EP0347162A2 Apparatus and methods for controlling data flow processes by generated instruction sequences | 
| 12/20/1989 | EP0346970A1 Circuit for measuring capacity of battery | 
| 12/20/1989 | EP0346404A1 Process for determining the energy content of an electrochemical storage battery | 
| 12/20/1989 | EP0346386A1 Electro-optic measurement (network analysis) system | 
| 12/20/1989 | CN2049776U Digital display type apparatus for cable wires identifying | 
| 12/20/1989 | CN1038179A Control system and device for contactor appratus | 
| 12/20/1989 | CN1038178A Control and testing system for installation using contactors | 
| 12/20/1989 | CN1038169A Method of and apparatus for detecting short-circuit between sheets of pile sheet cores | 
| 12/19/1989 | US4888716 Life diagnosis apparatus for automotive battery | 
| 12/19/1989 | US4888715 Semiconductor test system | 
| 12/19/1989 | US4888549 System for testing individually a plurality of disk drive units | 
| 12/19/1989 | US4888548 Programmatically generated in-circuit test of digital to analog converters | 
| 12/19/1989 | US4887969 IC socket | 
| 12/14/1989 | WO1989012379A1 System for detecting free particles in a component housing and detection process | 
| 12/14/1989 | WO1989012344A1 Microprocessor based recharger for lithium secondary system | 
| 12/14/1989 | WO1989012289A1 Methods, systems and apparatus for detecting changes in variables | 
| 12/14/1989 | WO1989012273A1 Testing method | 
| 12/14/1989 | WO1989012268A1 Control and monitoring circuit for electrical seat heaters, in particular in motor vehicles | 
| 12/13/1989 | EP0346166A1 Apparatus for the regulation of the temperature of a component by blowing a gas at the appropriate temperature | 
| 12/13/1989 | EP0345702A2 Process for investigating the latch-up extension in CMOS circuits | 
| 12/13/1989 | EP0345701A2 Process for investigating the latch-up extension in CMOS circuits | 
| 12/13/1989 | EP0345390A1 Improvement in or Relating to Jitter Circuits | 
| 12/13/1989 | CN2049365U Tester for low-voltage leakage protective device | 
| 12/12/1989 | US4887279 Timing measurement for jitter display | 
| 12/12/1989 | US4887267 Logic integrated circuit capable of simplifying a test | 
| 12/12/1989 | US4887215 Method of examining operation of electronic control system for internal combustion engines | 
| 12/12/1989 | US4887203 Microcoded processor executing microroutines with a user specified starting microaddress | 
| 12/12/1989 | US4887041 Method and instrumentation for the detection, location and characterization of partial discharges and faults in electric power cables | 
| 12/12/1989 | US4887031 Method and apparatus for detecting and imaging measuring points that have a defined signal progression | 
| 12/12/1989 | US4887030 Testing device for electrical circuit boards | 
| 12/12/1989 | US4887026 Voltage detector for detecting a voltage developing in a selected area of an object | 
| 12/07/1989 | DE3917795A1 Ladegeraet zum wiederaufladen einer sekundaerzelle mit einer li-cucl(pfeil abwaerts)2(pfeil abwaerts)-verknuepfung Charger to recharge a sekundaerzelle with a li-CuCl (Down Arrow) 2 (down arrow) link | 
| 12/06/1989 | EP0344869A1 Regulating circuit for an electrically heated seat, especially one for automotive vehicles | 
| 12/06/1989 | EP0344834A1 Electronic module comprising substrate elements | 
| 12/06/1989 | EP0344558A2 Method and apparatus for detecting short circuits in stacks of iron plates | 
| 12/06/1989 | EP0344271A1 System and method for testing digital electronic circuits | 
| 12/05/1989 | US4885712 Method and apparatus for partial test-cause generation | 
| 12/05/1989 | US4885534 Direct measurement of photodiode impedance using electron beam probing | 
| 12/05/1989 | US4885532 Apparatus for testing multiphase outlet with visual indication of phase energization, phase rotation, and supply voltage | 
| 12/05/1989 | US4885523 Battery conditioning system having communication with battery parameter memory means in conjunction with battery conditioning | 
| 12/05/1989 | US4885465 Spectrum display device for x-ray microanalyzer or the like | 
| 12/05/1989 | US4885463 Method and apparatus for testing infrared detectors | 
| 12/05/1989 | CA1263706A1 Dc ground fault detection | 
| 11/30/1989 | WO1989011748A1 Voltage controlling and indicating device | 
| 11/30/1989 | WO1989011659A1 Novel method of making, testing and test device for integrated circuits | 
| 11/30/1989 | WO1989011650A1 Electronic battery testing device with automatic voltage scaling | 
| 11/30/1989 | DE3915322A1 Method of establishing the packed state of a substrate in a computer system | 
| 11/30/1989 | DE3818034A1 Meter for the display of the internal resistance of a battery | 
| 11/29/1989 | EP0344075A1 Production control of a printed circuit | 
| 11/29/1989 | EP0343828A1 LSI system including a plurality of LSI circuit chips mounted on a board | 
| 11/29/1989 | EP0343610A2 Method of characterizing bistable semiconductor lasers | 
| 11/29/1989 | EP0343579A2 Releasing circuit for actuating vehicular safety device | 
| 11/29/1989 | EP0343578A2 Releasing circuit for actuating vehicular safety device | 
| 11/29/1989 | EP0343537A2 Timing generator | 
| 11/29/1989 | EP0343177A1 Digital-to-time converter. | 
| 11/29/1989 | CN2048591U Contactless electric tester | 
| 11/29/1989 | CN2048589U Tester pen of multitester | 
| 11/28/1989 | US4884228 Flexible instrument control system | 
| 11/28/1989 | US4884122 Method and configuration for testing electronic circuits and integrated circuit chips using a removable overlay layer | 
| 11/28/1989 | US4884056 System for displaying trouble in an electronic control system of a motor vehicle | 
| 11/28/1989 | US4884034 Ground fault detector and locator | 
| 11/28/1989 | US4884033 Diagnostic test apparatus for electrical system of automotive vehicle | 
| 11/28/1989 | US4884032 Trailer/tractor light system tester | 
| 11/28/1989 | US4884027 Manual microcircuit die test system | 
| 11/28/1989 | US4884026 Electrical characteristic measuring apparatus | 
| 11/28/1989 | US4884024 Test pin assembly for circuit board tester | 
| 11/28/1989 | US4884023 Method and apparatus for determining the rotor resistance of a rotating-field machine | 
| 11/28/1989 | US4883054 Optical fiber break detector | 
| 11/28/1989 | CA1263456A1 Adjustable system for skew comparison of digital signals | 
| 11/23/1989 | EP0343056A1 Automatic charger for batteries or accumulators | 
| 11/23/1989 | EP0343055A1 Automatic charger capable of charging several batteries | 
| 11/23/1989 | EP0343021A1 Flex dot wafer probe | 
| 11/23/1989 | EP0342864A2 Wiring pattern detection method and apparatus | 
| 11/23/1989 | EP0342787A2 Search method for generating test vectors for sequential logic circuits | 
| 11/23/1989 | EP0342784A2 Program controlled in-circuit test of analog to digital converters | 
| 11/23/1989 | EP0342597A2 Abnormality system for a high voltage power supply apparatus | 
| 11/23/1989 | EP0342579A1 Apparatus for testing the autonomy of an emergency-lighting unit | 
| 11/23/1989 | EP0342321A1 Circuits for the synthetic testing of high-voltage breakers | 
| 11/22/1989 | CN2048194U Multi-functional check the number appliance for cable | 
| 11/21/1989 | US4882682 Apparatus for detecting position of internal fault of gas insulated bus | 
| 11/21/1989 | US4882486 Electron detection with energy discrimination | 
| 11/21/1989 | US4881863 Apparatus for inspecting wafers | 
| 11/21/1989 | US4881591 Oven for the burn-in of integrated circuits | 
| 11/16/1989 | WO1989011106A1 Portable identifier apparatus for communication cables | 
| 11/16/1989 | WO1989011093A1 Substrate examining apparatus and method of operating same | 
| 11/16/1989 | DE3815001A1 Einrichtung zum laden von akkumulatoren Means for charging batteries | 
| 11/15/1989 | EP0342101A1 Test device for a fuse used in an apparatus for measuring the intensity of a current | 
| 11/15/1989 | EP0342045A2 Electronic device testing system | 
| 11/15/1989 | EP0341806A2 Apparatus for inspecting circuit boards with surface mounted components | 
| 11/15/1989 | EP0341685A2 Image processing apparatus and method for inspecting defects of enclosures of semiconductor devices | 
| 11/15/1989 | EP0341629A2 Printed circuit board and a method of recognizing the position of surface mounted parts | 
| 11/15/1989 | EP0341616A2 Architecture and device for testable mixed analog and digital VLSI circuits | 
| 11/15/1989 | EP0341555A1 Method and apparatus for testing fastener arcing and sparking | 
| 11/15/1989 | CN2047789U Level detector for solution electrolyzer | 
| 11/15/1989 | CN1037243A Arrangement for fault indication | 
| 11/14/1989 | US4881038 Electric battery testing device with automatic voltage scaling to determine dynamic conductance | 
| 11/14/1989 | US4881029 Semiconductor integrated circuit devices and methods for testing same |