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BU350/55

Information - Help 
ID = 57640
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to BU350/55

Base SPECIAL TUBEBASE in general
Filament
Information source - - Manufacturers Literature   december 1948
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bu280-20_800-6data_1.png
BU350/55: own collection
Peter den Boer

 

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