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History of the manufacturer  

Blue Ribbon (tube brand)

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Name: Blue Ribbon (tube brand)    (USA)  
Abbreviation: blueribbon
Products: Brand

No information on the manufacturer of the Blue Ribbon tube has so far been located but a box for the X171A tube is on page 17 of Radio Tubes and Boxes by George Fathauer.


This manufacturer was suggested by Fin Stewart.