Silvertown patent portable testing set

Made:: 1922

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Silvertown patent portable testing set, type A, 1922
Science Museum Group
© The Board of Trustees of the Science Museum

Silvertown patent portable testing set, type A, 1922

Details

Category:: Telecommunications

Object Number:: 1977-645

type:: portable testing set

credit:: Dean, F.L.W.

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Silvertown patent portable testing set

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