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APCO Mfg. Company

APCO Manufacturing Company, 1200 Eddy Street, Providence, Rhode Island, USA


First seen: 01-Jan-1926
Last seen: 31-Nov-1926

Brand(s): APCO Twin

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APCO Twin variants:

 
A
P
C
O
Twin
1
Tube
{v1} Globe, tall bakelite base, tipless, oval envelope label, dual filament with switched pins


  
Brand variant
 
 
 
 

{v1} "APCO" "Twin" with oval envelope label.


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Bibliography references:
  1. Radio Retailing, Jun-1929, pg. 267. From AmericanRadioHistory.com. Retrieved 30-Nov-2018. !
  2. Radio Broadcast, Dec-1929, pg. 123. From AmericanRadioHistory.com. Retrieved 30-Nov-2018. !

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