4. Electricity: circuit makers and breakers
  5. Liquid contact
  6. Time delay

Tohoru Tamagawa

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Circuit interrupting apparatus for use in direct current circuit

Electricity: electrical systems and devices – Safety and protection of systems and devices – Arc suppression at switching point
Patent

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DC Circuit breaker

Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent

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DC Circuit breaker apparatus

Electricity: electrical systems and devices – Safety and protection of systems and devices – Arc suppression at switching point
Patent

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Electrodes of vacuum switch

Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent

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Gas laser oscillator

Coherent light generators – Having an applied magnetic field
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Profile ID: LFUS-PAI-P-971537

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