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ID = 28935
Brand: Lutèce-Lumière S.A.; Paris
Tube type:  Dual-Grid Tetrode   Frequency converter 
Identical to 2GS
First year 1928 ?? Saga of the Vacuum Tube, Tyne page 413

Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 1.7 Ampere / Direct / Parallel, (AC/DC)
Description Manufacturers : Lutèce-Lumiere SA, Paris
AC heater 2 to 2.5V 1.7A
Bigrille mixer 
Text in other languages (may differ)
Information source - - Manufacturers Literature   Catalog 1929
2GS: Manufacturers data
Patrice Zeissloff

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