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1991-02-06
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1989-07-20
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1992-08-18
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1986-09-24
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1989-07-26
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1988-01-13
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1988-09-07
Vial for the treatment of cells in an electrical field
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1990-07-18
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1990-10-22
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1987-08-19
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1989-08-23
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1987-06-30
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1986-12-02
Method of and network for localization of short-circuits in low voltage power networks
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1987-12-31
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1988-09-15
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1990-02-28
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1986-03-31
Testing system for testing condition of wire-to-earth insulation in lv ac power distribution networks
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1988-11-10
Circuit arrangement for monitoring presence and sequence of phases in three-phase power supply network
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1987-12-31
Method measuring reactive power for power factor correction with preset phase angle and circuit arrangement therefor
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1986-06-17
Power factor measuring system and method
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1988-03-31
Single-phase electronic meter for electric energy
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1987-07-29
An electrical power distribution unit
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1983-02-14
Method of and apparatus for measurement of arc power and current in arc furnace
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1987-09-07
Method of and system for measuring temperature of current carrying conductors