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BU70/22

Information - Help 
ID = 57603
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to BU70/22

Base Europe 3-Pin B3 (Eu H)
Filament
Information source - - Manufacturers Literature   december 1948
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b3_baretter_centre_tapped~~1.png BU70/22: Fin Stewart
Fin Stewart


Just Qvigstad
bu70-22_90-100data.png
BU70/22: own collection
Peter den Boer

 

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