Radio valve - 4278 A, screened grid

Radio valve - 4278 A, screened grid

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Radio valve - 4278 A, screened grid
Science Museum Group
© The Board of Trustees of the Science Museum

Radio valve - 4278 A, screened grid

Details

Category:
Electronic Components
Object Number:
1938-112
type:
radio valve
credit:
Standard Telephones and Cables Limited