| Patents for G01R 1 - Details of instruments or arrangements of the types covered by groups or (27,269) |
|---|
| 09/06/1989 | EP0331614A1 Adapter for a device to test printed circuits |
| 09/06/1989 | EP0331282A1 Membrane-based IC test probe with precisely positioned contacts |
| 09/06/1989 | EP0331163A1 Contacting device for testing arrangements for testing circuit boards or the like |
| 09/06/1989 | EP0330942A1 Display for a measuring instrument |
| 09/05/1989 | US4864227 Wafer prober |
| 09/05/1989 | US4864225 Coaxial cable tracer and tester |
| 09/05/1989 | US4864222 Voltage detector employing electro-optic material having a corner-cube shape |
| 09/05/1989 | US4864220 Voltage detector using electro-optic material and interference of light beams |
| 08/29/1989 | US4862077 Probe card apparatus and method of providing same with reconfigurable probe card circuitry |
| 08/29/1989 | US4862076 Test point adapter for chip carrier sockets |
| 08/29/1989 | US4862075 High frequency test head using electro-optics |
| 08/29/1989 | US4862061 Microwave proximity sensor |
| 08/29/1989 | US4860901 Housing with a flexible shock protector for a portable measuring instrument |
| 08/22/1989 | US4860170 Pointer illuminating structure in measuring instrument |
| 08/22/1989 | US4859189 Multipurpose socket |
| 08/22/1989 | CA1258697A1 Position sensor for magnetic suspension and pointing system |
| 08/15/1989 | US4857837 Magneto resistive current sensor with improved fidelity |
| 08/15/1989 | US4857836 Mechanical probe for optical measurement of electrical signals |
| 08/15/1989 | US4857009 Fixture latching mechanism |
| 08/09/1989 | EP0327138A1 Wide bandwidth R.F. load |
| 08/08/1989 | US4855673 Electron beam apparatus |
| 08/08/1989 | US4855591 Electro-optical voltage detector |
| 08/01/1989 | USH663 High density probe head for chip testing |
| 08/01/1989 | US4853627 Wafer probes |
| 08/01/1989 | US4853626 Emulator probe assembly for programmable logic devices |
| 08/01/1989 | US4853625 Electric wire clip |
| 08/01/1989 | US4853624 Tunable microwave wafer probe |
| 08/01/1989 | CA1258098A1 Apparatus for data transmission from multiple sources on a single channel |
| 08/01/1989 | CA1258094C Apparatus for measuring the potential of a transmission line conductor |
| 07/27/1989 | DE3801222A1 Contacting device for test purposes, particularly for testing semiconductor chips |
| 07/26/1989 | EP0325269A1 Conductive pattern for electric test of semiconductor chips |
| 07/26/1989 | CN1034274A 智能化保护器 Intelligent protection |
| 07/25/1989 | US4851967 Distribution bank for communication cables |
| 07/25/1989 | US4851767 Detachable high-speed opto-electronic sampling probe |
| 07/25/1989 | US4851765 Apparatus for electrically testing printed circuit boards having contact pads in an extremely fine grid |
| 07/25/1989 | US4850897 Adapter for providing electrical access to circuits in a cable head assembly |
| 07/25/1989 | US4850893 Test probe apparatus |
| 07/20/1989 | DE3744436A1 Variable transformer |
| 07/19/1989 | EP0324110A2 Electrical signal sampling probe apparatus |
| 07/18/1989 | US4849903 Digitally controlled system for effecting and presenting a selected electrical resistance |
| 07/18/1989 | US4849691 Apparatus and method for isolating and connecting two electrical circuits |
| 07/18/1989 | US4849689 Microwave wafer probe having replaceable probe tip |
| 07/11/1989 | US4847553 Needle card contacting mechanism for testing micro-electronic components |
| 07/11/1989 | US4847518 CMOS voltage divider circuits |
| 07/11/1989 | US4846739 Gas impervious crimp connection |
| 07/11/1989 | US4846702 Electrical connector for surface mount chip carrier installed in a socket |
| 07/06/1989 | DE3743543A1 Bedien- und anzeigevorrichtung Operating and display device |
| 07/06/1989 | DE3742898A1 Contact-making device |
| 07/05/1989 | EP0322607A2 Control device for an apparatus for testing electrical function of wiring patterns |
| 07/05/1989 | CN2040648U Digital ac voltage current transformer |
| 07/04/1989 | US4845427 Arrangement for the measurement of electronic units |
| 07/04/1989 | US4845310 Electroformed patterns for curved shapes |
| 06/28/1989 | CN2040253U Universal single-phase rationing electric meter |
| 06/27/1989 | US4843315 Contact probe arrangement for electrically connecting a test system to the contact pads of a device to be tested |
| 06/27/1989 | US4843313 Integrated circuit package carrier and test device |
| 06/27/1989 | US4843306 Replaceable resistors for calibrating a watthour meter |
| 06/27/1989 | US4842526 Test fixture for electronic components |
| 06/20/1989 | US4841241 Testing device for both-sided contacting of component-equipped printed circuit boards |
| 06/20/1989 | US4841240 Method and apparatus for verifying the continuity between a circuit board and a test fixture |
| 06/20/1989 | US4841238 Gauge driving system |
| 06/20/1989 | US4841237 Current-measuring device |
| 06/20/1989 | US4841236 Current ratio device |
| 06/20/1989 | US4841234 Voltage detector utilizing an optical probe of electro-optic material |
| 06/20/1989 | US4841231 Test probe accessibility method and tool |
| 06/15/1989 | WO1989005569A1 Shields for electromagnetic radiation |
| 06/14/1989 | EP0320355A1 Socket for a power contactor with plugs |
| 06/13/1989 | US4839587 Test fixture for tab circuits and devices |
| 06/13/1989 | US4838802 Low inductance ground lead |
| 06/13/1989 | US4838653 Liquid crystal display with particular relationship of the capacitances |
| 06/07/1989 | EP0318549A1 Test meters. |
| 06/06/1989 | US4837622 High density probe card |
| 06/06/1989 | US4837507 High frequency in-circuit test fixture |
| 06/06/1989 | US4836800 Electrical connector (with telescoping for sealing) |
| 06/06/1989 | US4836797 Electrical device contactor |
| 06/06/1989 | US4836027 Circuit for a sensor |
| 06/01/1989 | WO1989005089A1 Apparatus for testing circuit cards |
| 06/01/1989 | WO1989005088A1 A method for testing circuit cards and an apparatus for carrying out testing |
| 05/31/1989 | CN2038657U Load device with adjustable power factor |
| 05/30/1989 | US4835465 Testing apparatus for plated through-holes on printed circuit boards, and probe therefor |
| 05/30/1989 | US4835464 Decoupling apparatus for use with integrated circuit tester |
| 05/30/1989 | US4835463 Wide dynamic range a.c. current sensor |
| 05/30/1989 | US4835460 Display device of the galvanometric or logometric type, including a control circuit in form of an integrated circuit chip |
| 05/30/1989 | US4834668 Electrical connector (cut-off through the cover) |
| 05/30/1989 | US4834663 Device for testing cables provided with plugs |
| 05/30/1989 | US4834659 Adaptor in apparatus for electronically testing printed circuit boards |
| 05/30/1989 | CA1254947A1 Overhead power line clamp and antenna |
| 05/24/1989 | EP0317222A2 Voltage divider circuits |
| 05/24/1989 | EP0317191A2 Terminal connection device |
| 05/23/1989 | US4833404 Test probe for surface mounted leadless chip carrier |
| 05/23/1989 | US4833402 Connector assembly for a circuit board testing machine, a circuit board testing machine, and a method of testing a circuit board by means of a circuit board testing machine |
| 05/23/1989 | US4833396 Lead frame short tester |
| 05/23/1989 | US4832621 Probe for in-circuit emulator |
| 05/17/1989 | EP0315707A1 Adapter for a device for electronic testing of printed circuit boards |
| 05/16/1989 | US4831210 Metallized plastic housings |
| 05/16/1989 | US4830622 Integrated circuit socket and board |
| 05/16/1989 | CA1254267A1 Braking device for the induction meters |
| 05/09/1989 | US4829242 Multigigahertz probe |
| 05/09/1989 | US4829241 Apparatus for testing printed circuit boards |
| 05/09/1989 | US4829239 Multimeter |
| 05/09/1989 | US4829235 Four-terminal connector for measuring resistance of a pyrotechnic initiator |