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Google and AT&T differ on vision for U.S. spectrum, Bloomberg says

Wireless providers like AT&T (T) want as many airwaves as possible as they are pressured to meet growing demand from smartphones and tablets but as U.S. regulators prepare to auction airwaves. the Federal Communications Commission Chairman Julius Genachowski, favors the vision shared by Google (GOOG) and Microsoft (MSFT) of setting aside spectrum for mobile services not yet invented, says Bloomberg.