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General Dynamics Corporation/Convair Div. |
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1981-04-21 |
1982-10-27 |
Scientific Columbus, Inc. |
Multi-function electricity billing meter
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JPS58172927A
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株式会社日立製作所 |
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Power Solutions, Inc. |
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Mitsubishi Electric Corp |
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Edmund Prof Dr Ing Handschin |
Verfahren und schaltung zur schnellen ermittlung elektrischer groessen von wechselstromsystemen
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1986-01-24 |
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Cit Alcatel |
Procede et dispositif de mesure de la puissance efficace apres filtrage passe-haut d'un signal echantillonne
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1986-12-15 |
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1987-03-11 |
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Cd Power Measurement Limited |
Power meter for determining parameters of muliphase power lines
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1995-04-10 |
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Power Measurement Ltd. |
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1999-08-09 |
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Revenue meter with power quality features
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Wallace Henry B. |
True RMS audio power meter
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2003-06-03 |
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Audio power meter
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2005-01-27 |
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Intelligent electronic device with enhanced power quality monitoring and communication capabilities
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2005-01-27 |
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Intelligent electronic device with broad-range high accuracy
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2005-01-27 |
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Intelligent electronic device with enhanced power quality monitoring and communications capabilities
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2005-01-27 |
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Intelligent electronic device and method thereof
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2007-03-27 |
2013-11-19 |
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2007-04-03 |
2013-10-17 |
Electro Industries/Gaugetech |
Digital power metering system
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2007-04-03 |
2020-11-24 |
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2007-04-03 |
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2008-03-13 |
2024-08-13 |
Ei Electronics Llc |
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Brymen Technology Corporation. |
Clamp meter for measuring voltage and current simultaneously and method for the same
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2019-05-20 |
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北京航天常兴科技发展股份有限公司 |
防止漏电误报警的方法及电气火灾监控探测器、监控系统
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2019-11-25 |
2023-07-18 |
Itron Global Sarl |
Networked utility services and vehicle charging stations
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