Silica, hard vacuum

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Silica, hard vacuum, thermionic triode valve: K5875/NT57T M677
Science Museum Group
© The Board of Trustees of the Science Museum

Silica, hard vacuum, thermionic triode valve: K5875/NT57T M677

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Category:: Electronic Components

Object Number:: 1992-422

type:: valve

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Silica, hard vacuum

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