Present standard four electrode type valve W/T

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Present standard four electrode type valve W/T
Science Museum Group
© The Board of Trustees of the Science Museum

Present standard four electrode type valve W/T

Details

Category:: Electronic Components

Object Number:: 1923-621

type:: valve

credit:: M.O. Valve Co. Ltd. (formerly Marconi-Osram Valve Co. Ltd.)

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Present standard four electrode type valve W/T

Details

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