| Patents for G01R 1 - Details of instruments or arrangements of the types covered by groups or (27,269) |
|---|
| 07/03/1979 | US4160247 Means for housing an electrical control |
| 07/03/1979 | US4160207 Printed circuit board tester with removable head |
| 06/13/1979 | EP0002211A1 Electrical coupling piece |
| 06/05/1979 | US4157510 Electronic instrument amplifier |
| 05/29/1979 | US4156844 Multi-channel galvanometer assembly |
| 05/29/1979 | US4156841 Contact fingers for a testing apparatus for surface insulation resistivity |
| 05/15/1979 | US4155004 Photoelectric transducing unit and system for detecting the sharpness of the image of object by means of the unit -and- a focusing arrangement |
| 05/08/1979 | US4153149 Adjusting knob device for electrical instruments and the like |
| 05/08/1979 | CA1054248A1 Protective case for electrical instruments on circuit boards |
| 05/01/1979 | US4152644 Fixture for testing integrated circuits |
| 04/24/1979 | US4151465 Variable flexure test probe for microelectronic circuits |
| 04/24/1979 | US4151462 Electrical test probe having a spring biased clip with an extendable and retractable tip movable within the clip |
| 04/10/1979 | US4149096 Switching matrix with connection modules |
| 04/10/1979 | CA1052445A1 Single knob rotary control of meter damping and push control damping override |
| 03/07/1979 | EP0000923A1 Device for detecting, measuring and indicating the energy consumption of electricity consumers |
| 02/27/1979 | US4142149 Control meter usable as a potentiometric or photoelectric device |
| 02/20/1979 | US4140968 Damping of electrical measuring instruments |
| 02/20/1979 | CA1049099A1 Retrofit demand meter |
| 02/13/1979 | US4139821 Inner magnet type movable coil instrument with linear scale |
| 02/13/1979 | US4139817 Impedance-switching connector |
| 02/13/1979 | US4139813 Adaptor for an electrometer probe to permit contact potential measurements and method for using same |
| 02/13/1979 | CA1048608A1 Tamper-resistant electrical meter housing |
| 02/06/1979 | US4138643 Programmable probe fixture and method of connecting units under test with test equipment |
| 02/06/1979 | US4138641 Instrument amplifier and load driver having offset elimination and common mode rejection |
| 01/09/1979 | US4134062 Limited rotation instrument rebalance apparatus employing a wiper having vibration damping |
| 01/02/1979 | US4132948 Test fixture using stock printed circuit board having test pins mounted thereon |
| 01/02/1979 | US4132946 Digital readout test probe |
| 12/26/1978 | US4131846 Meter control circuit |
| 12/12/1978 | CA1044379A1 Wafer transfer device |
| 11/21/1978 | US4126380 Probe with contact indicating means |
| 10/31/1978 | US4123706 Probe construction |
| 10/31/1978 | US4123696 Signal handling apparatus |
| 10/24/1978 | CA1041225A1 High density wafer contacting and test system |
| 10/17/1978 | US4121154 Alternating current potential measuring device |
| 10/17/1978 | US4121147 Electric meter for mounting with a standard watthour meter |
| 10/03/1978 | US4118090 Electrical contact devices |
| 09/26/1978 | US4116523 High frequency probe |
| 09/26/1978 | CA1039411A1 Solid-state potentiometer for coupling circuits having isolated electrical grounds |
| 09/19/1978 | US4115736 Probe station |
| 09/19/1978 | US4115735 Test fixture employing plural platens for advancing some or all of the probes of the test fixture |
| 09/19/1978 | US4115734 Laminated driver coil for recorder pen drive mechanism |
| 09/19/1978 | US4115733 Digital display plug-in |
| 09/12/1978 | US4114095 Solid state oscilloscope |
| 09/05/1978 | US4112364 Circuit board testing apparatus |
| 09/05/1978 | US4112363 Multicontact test probe apparatus |
| 09/05/1978 | CA1038042A1 Programmable probe fixture and method of connecting units under test with test equipment |
| 08/22/1978 | US4108528 Probe actuator assembly |
| 08/15/1978 | US4106344 Housing for electro-mechanical counter |
| 08/08/1978 | US4105970 Test pin |
| 08/08/1978 | US4105969 Galvanometer mechanism mounted on printed circuit board having plug portion for insertion into control console receptacle |
| 07/25/1978 | US4103232 Wafer transfer device |
| 07/25/1978 | US4103231 Electrometric apparatus |
| 07/18/1978 | US4101830 Mercury probe |
| 07/11/1978 | US4100488 Apparatus for measuring electric current |
| 07/11/1978 | US4099601 Solenoid operated cone brake |
| 07/04/1978 | US4099120 Probe head for testing printed circuit boards |
| 06/20/1978 | US4096348 Integrated test and assembly device |
| 05/30/1978 | US4092698 Protective case for electrical instruments on circuit boards |
| 05/30/1978 | US4092593 Circuit board testing machine |
| 05/30/1978 | US4092591 Electric meter |
| 05/30/1978 | US4092184 Remagnitization in situ |
| 05/02/1978 | US4087747 Arrangement for testing electric samples with a plurality of probe contact points |
| 04/11/1978 | US4084134 Voltage detector with field effect transistor and high input impedance |
| 03/28/1978 | US4081854 Meter protection circuit |
| 03/21/1978 | US4080570 Panel mounting for electrical device |
| 03/14/1978 | US4079314 Pincette type multi-tester |
| 02/21/1978 | US4075623 Reference voltage circuit |
| 02/21/1978 | US4075561 Programmable electrical apparatus containing a battery |
| 01/31/1978 | US4071824 Shrouded jaws for hook-on type instruments |
| 01/31/1978 | US4071823 Two-wire type amplifier |
| 01/17/1978 | US4069453 Transistor test fixture |
| 01/17/1978 | US4068916 Voltage tap |
| 01/10/1978 | US4068170 Method and apparatus for contacting the lead of an article |
| 01/03/1978 | US4066958 Compensated galvanometer |
| 01/03/1978 | US4066943 High speed precision chuck assembly |
| 12/27/1977 | US4065717 Multi-point microprobe for testing integrated circuits |
| 12/13/1977 | US4063172 Multiple site, differential displacement, surface contacting assembly |
| 12/13/1977 | US4062617 Electrical test connector apparatus |
| 12/06/1977 | US4061969 Apparatus for testing printed circuit boards |
| 11/22/1977 | US4059798 Method and apparatus for measuring the current flowing in a workpiece |
| 11/01/1977 | US4056777 Microcircuit test device with multi-axes probe control |
| 10/25/1977 | US4055806 Integrated circuit substitution device |
| 10/25/1977 | US4055805 Multi-point test probe |
| 10/25/1977 | US4055800 Test clip for electronic chips |
| 10/11/1977 | US4053047 Combination display cover, handle, and tilt stand for portable instrument |
| 09/27/1977 | US4051436 Apparatus for and method of measuring polarization potential of a metallic structure |
| 09/27/1977 | US4050762 Telescoping spring probe having separate wiper contact member |
| 09/20/1977 | US4050021 Moving-coil measuring system with a large pointer deflection |
| 09/20/1977 | US4050019 Range switching circuit for solid state electrometer |
| 09/20/1977 | US4049960 Focusing arrangement |
| 09/13/1977 | US4048560 Electrical meter apparatus |
| 09/13/1977 | US4047780 Test contactor system for semiconductor device handling apparatus |
| 08/30/1977 | US4045737 Integrated circuit probe |
| 08/30/1977 | US4045735 Apparatus for testing electronic devices having a high density array of pin leads |
| 08/30/1977 | US4045674 Diamonds |
| 08/23/1977 | US4044305 Apparatus for providing a displacement representative of the magnitude of a signal |
| 08/16/1977 | US4042881 Voltage measuring device having an amplifier in the probe |
| 08/16/1977 | US4042880 Electrode assembly for measuring the effective thickness of thru-hole plating circuit board workpieces |
| 08/09/1977 | US4041380 Multi-function tester with removable circuit cartridge |
| 08/02/1977 | US4039976 Coaxial current probe |