4. Compositions: ceramic
  5. Ceramic compositions
  6. Refractory

Walter R. Johnson

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Electrical insulating refractory composition

Electrical resistors – Incased – embedded – or housed – Element inpowdered insulation with outer metallic sheath
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Electrical insulating refractory composition

Compositions: ceramic – Ceramic compositions – Refractory
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Liquid cooled electric motor frame

Electrical generator or motor structure – Dynamoelectric – Rotary
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Push-button dial assembly for telephones

Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
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Profile ID: LFUS-PAI-P-308207

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