4. Electricity: circuit makers and breakers
  5. Liquid contact
  6. Time delay

Northern Engineering Industries Ltd.

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Gas-insulated circuit-interrupter having improved insulating noz

Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent

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Regeneration of ion exchange materials

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent

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Regeneration of ion exchange materials

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent

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