SEATTLE Thu Feb 13, 2014 4:11pm EST (Reuters) – Microsoft Corp’s Windows 8 system has racked up more than 200 million license sales since its launch 15 months ago, according to Tami Reller, its head of marketing, lagging Windows 7 which sold 240 million within its first year. The latest Windows 8 sales figure, announced by Reller at a Goldman Sachs technology conference on Thursday, is the first that Microsoft has made public for more […]