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

Hugo Hiltbrunner

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Electric switch having an annular stationary contact

Electricity: circuit makers and breakers – High-potential type – Rotating and pivoted
Reexamination Certificate

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Gas-blast circuit breaker

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

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Three-position ground switch

High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Air-current blowout
Reexamination Certificate

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Profile ID: LFUS-PAI-P-56161

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