4. Electricity: electrical systems and devices
  5. Safety and protection of systems and devices
  6. Ground fault protection

Charles W. Draper

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Electrical device with retractable grounding pin and indicating

Geometrical instruments
Patent

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Ground fault circuit interrupter including snap-acting contacts

Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent

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Ground fault receptacle

Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent

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Ground fault receptacle

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
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Profile ID: LFUS-PAI-P-790685

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