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CY441

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ID = 29654
       
Country:
France
Brand: Cyrnos (brand) - see also MCB
Tube type:  TETRODE (Detail uncertain) 
Identical to CY441
Similar Tubes
Normally replaceable-slightly different:
  E441N

Filament Vf 4 Volts / If 1 Ampere / Indirect
Literature Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 152
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