Phillips "4 electrode" bright emitter valve

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Phillips 4 electrode' bright emitter valve for use with low and
Science Museum Group
© The Board of Trustees of the Science Museum

Phillips "4 electrode" bright emitter valve for use with low and no high tension wireless circuits

Details

Category:: Electronic Components

Object Number:: 1945-35

type:: valve

credit:: March, F.J.

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Phillips "4 electrode" bright emitter valve

Details

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