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History of the manufacturer  

Powertone (brand): Barfield Electrical Laboratories, New York NY

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Name: Powertone (brand): Barfield Electrical Laboratories, New York NY    (USA)  
Abbreviation: powertone
Products: Tube manufacturer
Summary:

Powertone is the tube brand of Barfield Electrical Laboratories, New York NY

History:

Powertone is the tube brand of Barfield Electrical Laboratories, New York NY. This is according to Tyne page 360. He lists the company/brand for 1925. See also a picture of a tube box here. The brand Powertone should not be confused with Power Tone in Austria, a tube brand there - if there was really one there and not already a confusion ...


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