OpinionNew Light-Bulb Battle a Breeze Compared With Edison's: EchoesJanuary 27, 2012 at 10:19 AM EST0FacebookTwitterLinkedInEmailLinkGiftFacebookTwitterLinkedInEmailLinkGiftGift this articleBefore it’s here, it’s on the Bloomberg TerminalBloomberg Terminal LEARN MOREFacebookTwitterLinkedInEmailLinkGiftBookmarkSaveLock This article is for subscribers only.Before it’s here, it’s on the Bloomberg TerminalBloomberg Terminal LEARN MORE