4. High-voltage switches with arc preventing or extinguishing devic
  5. Arc preventing or extinguishing devices
  6. Operating mechanism structure or arrangement

Toshimasa Maruyama

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Arc-extinguisher of a switch

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

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Electric power supply system for load

Electrical transmission or interconnection systems – Plural supply circuits or sources
Patent

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Switchgear

High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Operating mechanism structure or arrangement
Patent

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Switchgear

Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Reexamination Certificate

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Profile ID: LFUS-PAI-P-586997

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