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NL183424B
(nl)
*
|
1977-05-16 |
|
Enertec |
Elektronische energiemeter.
|
|
US4147978A
(en)
*
|
1977-12-19 |
1979-04-03 |
Dupont Energy Management Corporation |
System for monitoring electrical energy consumption
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US4321753A
(en)
*
|
1978-09-01 |
1982-03-30 |
Illinois Tool Works Inc. |
Electronic gear checker
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|
US4272891A
(en)
*
|
1978-09-01 |
1981-06-16 |
Illinois Tool Works Inc. |
Electronic gear checker
|
|
US4250449A
(en)
*
|
1978-11-24 |
1981-02-10 |
Westinghouse Electric Corp. |
Digital electric energy measuring circuit
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|
US4288744A
(en)
*
|
1979-07-19 |
1981-09-08 |
Allen-Bradley Company |
Summing watt-hour transducer
|
|
FR2469715A1
(fr)
*
|
1979-11-16 |
1981-05-22 |
Regie Autonome Transports |
Compteur electronique d'energie electrique
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|
SE417754B
(sv)
*
|
1980-01-29 |
1981-04-06 |
Elfi Innovationer |
Belastningsindikator for vexelstromsmotorer
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|
US4360879A
(en)
*
|
1980-08-28 |
1982-11-23 |
The Valeron Corporation |
Power measuring device
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US4371943A
(en)
*
|
1980-10-06 |
1983-02-01 |
General Dynamics Corporation/Convair Div. |
External means for detecting normal zones in superconducting magnets or coils
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|
US4431306A
(en)
*
|
1981-04-30 |
1984-02-14 |
The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration |
Method and apparatus for precision control of radiometer
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US4814996A
(en)
*
|
1982-06-10 |
1989-03-21 |
Futures Technology, Ltd. |
Portable energy cost calculation
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|
GB8402213D0
(en)
*
|
1984-01-27 |
1984-02-29 |
Kelly T J |
Electrical energy consumption cost meter
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US4788493A
(en)
*
|
1984-12-04 |
1988-11-29 |
Square D Company |
Apparatus for detecting direction of electric power flow
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US4801874A
(en)
*
|
1987-02-27 |
1989-01-31 |
Process Systems, Inc. |
Method and apparatus for measuring electricity
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US4902965A
(en)
*
|
1987-06-15 |
1990-02-20 |
Bodrug John D |
Consumption meter for accumulating digital power consumption signals via telephone lines without disturbing the consumer
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|
US4795974A
(en)
*
|
1987-07-24 |
1989-01-03 |
Ford Motor Company |
Digital energy meter
|
|
CH677037A5
(fr)
*
|
1987-08-06 |
1991-03-28 |
Landis & Gyr Betriebs Ag |
|
|
JPH0821049B2
(ja)
*
|
1987-09-24 |
1996-03-04 |
株式会社東芝 |
乗算器
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US5006790A
(en)
*
|
1987-10-19 |
1991-04-09 |
Appalachian Technologies Corporation |
Electronic thermal demand module
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GB2221313B
(en)
*
|
1988-07-26 |
1993-02-24 |
Omega Electric Ltd |
Instantaneous multiplier for use in power measurement systems
|
|
ES2040012T3
(es)
*
|
1989-12-14 |
1993-10-01 |
Landis & Gyr Business Support Ag |
Disposicion para la determinacion de valores de magnitudes electricas, que se pueden deducir de valores de medida de al menos dos magnitudes electricas de entrada de la disposicion.
|
|
US5164660A
(en)
*
|
1991-08-12 |
1992-11-17 |
Shell Oil Company |
True, power, RMS current, and RMS voltage measuring devices
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|
CN1314971C
(zh)
*
|
2003-06-04 |
2007-05-09 |
重庆电力科学试验研究院 |
1/4数字平方乘法器功率电能表
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JP6152969B2
(ja)
*
|
2013-03-27 |
2017-06-28 |
パナソニックＩｐマネジメント株式会社 |
電力計測器
|