26th Apr 2019, 11:59 am
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#33
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Dekatron
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 9,433
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Re: The lightbulb conspiracy
BSI for tungsten filament lamps for domestic use.
https://shop.bsigroup.com/ProductDet...00000030189879
Don’t click on the buy link. 
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Frank
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