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ID = 30541
United States of America (USA)
Brand: Donle-Bristol Co., Meriden, Conn.
Tube type:  Gas Triode   Detector 
Identical to DR-1V
First year 1927 Saga of the Vacuumtube, Tyne page 341.
First Source (s)
Sep.1927 : Popular Radio. Ad of Warford Electric
Predecessor Tubes B8_Donle  
Successor Tubes DP-10  

Literature Saga of the Vacuumtube, Tyne   

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