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Block B – AT&T Mobility was the biggest buyer in the B block, with 227 licenses totaling $6.6 billion. U.S. Cellular and Verizon bought 127 and 77 licenses, respectively. AT&T Mobility and Verizon Wireless bought licenses around the country, while U.S. Cellular continued with its strategy to buy licenses in northern regions. [22]
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AT&T Computer Systems (abbreviated AT&T-CS) was the home of the UNIX System V operating system, originally developed in the Bell Labs Research Division. The important System V Interface Definition (SVID) was written, attempting to standardize the various flavors of Unix , and define the official interfaces which made up a Unix operating system.
Partnering with AT&T as a technology provider, McCaw introduced their "Cellular One" service in 1990, the first truly national cellular system. AT&T purchased 33% of the company in 1992 and arranged a merger in 1994 that made Craig McCaw one of AT&T's largest shareholders. In 2002, the company was spun off from AT&T to become AT&T Wireless ...
Since AT&T was required to divest the Bell logo and trademark to the Baby Bells, American Bell was renamed AT&T Information Systems on January 1, 1984. The business unit, American Bell Advanced Information Systems, was absorbed into AT&T Network Systems , while American Bell Consumer Products, renamed AT&T Consumer Products , became a unit of ...
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