4. Equipment for production, distribution, or transformation of ene
  5. Distribution, modification or control
  6. Switch or casing therefor

Roy Ball

Inventor

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Method of manufacturing an extended test switch

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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Modular test plug

Electrical connectors – With supporting means for coupling part – Supporting plural – independent coupling parts
Reexamination Certificate

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Protective cover

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Switch or casing therefor
Design Patent

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Test plug

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Design Patent

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Test plug with overvoltage protection

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2266707

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