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

Erich Marquardt

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Electrical switch construction

Electricity: circuit makers and breakers – Special application – Liquid or moisture responsive
Patent

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Electrical switch construction

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

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Illuminator for a signal lamp

Illumination – Plural light sources – With modifier
Reexamination Certificate

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Pushbutton switch

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

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Signal apparatus

Illumination – Light source and modifier – With sealing means or artificial atmosphere
Reexamination Certificate

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Profile ID: LFUS-PAI-P-718313

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