4. Electricity: conductors and insulators
  5. Earth grounds

Bernard C. Crutcher

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Conductor connection

Electrical connectors – Metallic connector or contact having movable or resilient... – Cam or wedge between conductors
Reexamination Certificate

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Data collecting connection

Electrical connectors – Metallic connector or contact having movable or resilient... – Cam or wedge between conductors
Reexamination Certificate

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Rotational stabilizer

Electricity: circuit makers and breakers – Multiple circuit control – Operating means
Reexamination Certificate

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Utility pole grounding plate

Electricity: conductors and insulators – Earth grounds
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Profile ID: LFUS-PAI-P-2204590

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