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TypeB

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ID = 56564
       
Country:
United States of America (USA)
Brand: Moorhead Laboratories (Pacific); San Francisco
Developer: Moorhead Laboratories (Pacific); San Francisco 
Tube type:  LOCKED OFF PART (CODE 9) - see in Notes   Universal 
  <1925 rare.
Identical to TypeB = B_Moorhead-Shaw = VT-Class-I

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Radio/TV-reception etc.
Description Moorhead/Marconi/DF Type B: The Type B is a soft tube - see B_Moorhead, sometimes branded for Marconi or DeForest. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
45 x 112 x mm / 1.77 x 4.41 x inch
Weight 56 g / 1.98 oz
Information source Saga of the Vacuum Tube, Tyne   page 172


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