A Google logo is seen through windows of Moscone Center in San Francisco during Google's annual developer conference, Google I/O, in June. Google is one of several major tech companies known for the "acqui-hire."
Google's Android 3.0 Honeycomb OS is demonstrated on a Motorola Xoon tablet during a media event at Google headquarters on Feb. 2, 2011. Google acquired Motorola Mobility in August 2011 for $12.5 billion.
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