| Patents for G01R 11 - Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption (8,227) |
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| 12/27/1989 | CN2050170U Program-control peak-valley separating count three-phase four-wire active power watt-hour meter |
| 12/13/1989 | CN2049360U Electricity-stealing preventer fitting with kilowatt-hour meter |
| 12/06/1989 | CN2048976U Fixed double-functional electric-energy auto-calculator |
| 11/29/1989 | CN2048632U Anti-stealing current limiter |
| 11/29/1989 | CN2048587U Paper card electric meter |
| 11/29/1989 | CN2048586U Multi-functional time-share measuring electric meter |
| 11/22/1989 | CN2048192U Series inductive-type watt-hour meter energy saving with resonance mutual inductance |
| 11/22/1989 | CN2048191U Optional equipment of coin-box for watt-hour meter |
| 11/22/1989 | CN2048190U Multi-funetional combined box of watt-hour meter |
| 11/14/1989 | US4881072 Device for remote metering |
| 11/14/1989 | US4881070 Meter reading methods and apparatus |
| 11/14/1989 | CA1262936A1 Auxiliary equipment mounting ring for electric meter |
| 11/09/1989 | DE3813656A1 Arrangement for an electricity meter with audio-frequency ripple control receiver integrated in the meter housing |
| 11/08/1989 | CN2047381U Electricity-stealing detecting device |
| 11/08/1989 | CN2047380U Anti-stealing electricity single-phase kilowatt-hour meter |
| 11/08/1989 | CN2047379U Kilowatt-hour meter with electric leakage and short-circuit protective function |
| 11/08/1989 | CN1037037A High pressure measuring and supervising switch cabinet |
| 11/02/1989 | WO1989010570A1 Magnetic field detection system |
| 11/01/1989 | CN2047024U Three cost rate (peak-velley) watt-hour meter |
| 11/01/1989 | CN2047023U Anti-theft of power apparatus capable of cutting-off electric energy immediately |
| 11/01/1989 | CN2047022U Electricity saving controller for watt-hour meter |
| 11/01/1989 | CN1036838A Kilowatt-hour meter of multiple charge rates |
| 10/25/1989 | CN2046628U Electric meter with magnetic bearings |
| 10/25/1989 | CN2046627U Multi-function electric appliance monitor |
| 10/25/1989 | CN2046626U Digital electric meter with preset stored counts and self-controlling backing-up function |
| 10/18/1989 | CN2046220U Self-check three-phase voltage regulating device |
| 10/18/1989 | CN2046219U Multifunction self-control energy-saving protective device of electric meter |
| 10/18/1989 | CN2046218U Protective and supervisory device of kilowatt-hour meter |
| 10/10/1989 | US4872847 Pilfer proofing system for electric utility meter box |
| 09/26/1989 | CA1260598A1 Battery backup installation for electric meter |
| 09/26/1989 | CA1260574A1 Telemetering device |
| 09/06/1989 | CN2044074U Current frequency converter for electronic electric energy meter |
| 08/29/1989 | CA1258929A1 Method of and system for accumulating verifiable energy demand date from remote electricity meters |
| 08/23/1989 | CN2043362U Panel-inclined kilowatt-hour meter |
| 08/09/1989 | CN2042637U Multi-function power quantitative measuring & controlling device |
| 08/09/1989 | CN2042597U Time-division watt-hour meter |
| 08/09/1989 | CN2042596U Three phase four line electricity illegal use proof signal electric meter |
| 07/26/1989 | CN1034274A 智能化保护器 Intelligent protection |
| 07/25/1989 | US4852030 Time-of-use-meter with a calendar of cyclic events |
| 07/19/1989 | CN1004835B Compensator for total errors of electric energy countings |
| 07/12/1989 | CN2041046U Anti-electricity-stealing device |
| 06/28/1989 | CN2040253U Universal single-phase rationing electric meter |
| 06/28/1989 | CN2040252U Electricity steal preventing electric meter |
| 06/27/1989 | CA1256499A1 Device for measuring the induction in the air gap of a magnetic bearing |
| 06/21/1989 | CN2039853U Relay type anti-electricity steeling device |
| 06/21/1989 | CN2039852U No-load power saving device for single phase electrcity meter |
| 06/21/1989 | CN2039851U Coin-operated automatic rationing electricity meter |
| 06/21/1989 | CN1033486A Central-controlled and separate-sampled ac electric meter with conversion of different peak electric prices from low to high |
| 06/14/1989 | CN2039427U Automatic overrate electricity meter |
| 06/14/1989 | CN2039426U Multifunctional electricity theft preventer |
| 06/13/1989 | US4839600 Ammeter for use with A.C. electric power lines |
| 06/07/1989 | EP0318691A2 Sensor for consumption measuring in a domestic system |
| 06/07/1989 | CN2039022U Electricity watt-hour meter protection from fraudulent use |
| 06/07/1989 | CN1033322A Integrated poly-phase power meter |
| 05/31/1989 | CN2038629U Loss of phase indicator for three-phase four-way active watt-hour meter |
| 05/24/1989 | CN2038244U Electricity saving electric meter with the function of electricity-theft-proof |
| 05/24/1989 | CN2038243U Electric shielding anti-stealling electricity device |
| 05/24/1989 | CN2038242U Anti-stealing electricity-theft-proof and over current protector in electric meter |
| 05/24/1989 | CN2038241U Electricity theft-proof auto-controller for electric meter |
| 05/23/1989 | US4833455 Anti-tamper device for utility meters |
| 05/17/1989 | CN2037848U Electricity-steal preventing watt-hour meter |
| 05/10/1989 | EP0315335A2 Detection apparatus |
| 05/10/1989 | CN1032866A Intelligent monitor and its management system for electrical load |
| 05/03/1989 | CN2037113U Microcomputer multifunctional electric power quantity limiter |
| 04/25/1989 | CA1253208A1 Watthour meter voltage stator with left-right adjustment |
| 04/18/1989 | US4822334 Electrical dosimetry control system |
| 04/05/1989 | CN2035484U Anti-current stealing meter |
| 04/05/1989 | CN2035483U Anti-current stealing device |
| 04/05/1989 | CN2035482U Anti-current stealing electric meter |
| 03/29/1989 | CN2035090U Automatic switch for measurement and load controll |
| 03/29/1989 | CN2035089U Theft-against electric protetor |
| 03/28/1989 | CA1251830A1 Meter tampering detection device |
| 03/01/1989 | EP0304510A1 Measuring device |
| 03/01/1989 | CN2033515U Timing controlled gange transformation for a kilowatt-hour meter |
| 03/01/1989 | CN1031426A Remote quantitative controller of electric power |
| 02/22/1989 | EP0303615A1 Measurement circuit. |
| 02/22/1989 | CN2033124U Electrical equipment for chip control |
| 02/08/1989 | CN2032323U Time sharing controlled electricity meter |
| 02/07/1989 | US4803632 Intelligent utility meter system |
| 02/07/1989 | US4803484 Optically readable and human readable dial |
| 01/26/1989 | DE3723530A1 Indicating unit for supply meters and tariff devices |
| 01/25/1989 | CN2031532U Power saving device for electric meter |
| 01/18/1989 | CN2031100U Monitoring and measuring device for pt losing or lacking of pressure |
| 01/18/1989 | CN2031099U "resonant mutual-inductance" series current inducting type power-saving electricity meter |
| 01/11/1989 | CN2030727U Electricity stealing defencing, energy-seving electric sub meter box |
| 01/11/1989 | CN2030726U Electricity-stealing defencing device for three-pole electric meter |
| 01/11/1989 | CN2030725U Multi-functional electricity-stealing defencing protective device |
| 12/28/1988 | CN88211437U Phase angle regulating plate with temp. compensation device |
| 12/28/1988 | CN88211431U Induction type high-precision single-phase watt-hour meter |
| 12/28/1988 | CA1247702A Disk and gear mounting in electric watthour meter |
| 12/20/1988 | US4792677 System for use with a utility meter for recording time of energy use |
| 12/20/1988 | CA1247238A1 Solid state memory cartridge |
| 12/19/1988 | EP0303615A4 Measurement circuit. |
| 12/13/1988 | US4791362 Modularized solid state register |
| 12/07/1988 | CN87101043A Time-sharing counting controller of wattmeter |
| 11/16/1988 | CN87201549U Electricity-saving safety type kilowatt-hour meter |
| 11/08/1988 | US4783623 Device for use with a utility meter for recording time of energy use |
| 11/02/1988 | CN87209082U Kilowatt-hour meter protector with electric shockproof and anti-fraudulent use |
| 11/02/1988 | CN87204512U Kilowatt-hour meter for planning using electricity |
| 11/02/1988 | CN87103086A Anti-electricity-stealing kilowatt-hour meter |