4. Electricity: electrical systems and devices
  5. Safety and protection of systems and devices
  6. Motor protective condition responsive circuits

Ronald W. Hughes

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DC Solid state overload relay

Electricity: electrical systems and devices – Safety and protection of systems and devices – Motor protective condition responsive circuits
Patent

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Ground fault circuit interrupter

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1643405

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