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Southwestern Bell Mobile Systems, Inc. was a wireless telephone company. It was created in 1984 as a split-off of Advanced Mobile Phone Service, the original wireless subsidiary of the Bell System. It was a division of Southwestern Bell Corporation.
It continued to operate as Southwestern Bell Mobile Systems until 2000, when SBC Communications and BellSouth combined their wireless operations into a single company, Cingular Wireless. Southwestern Bell Mobile Systems' assets were then transferred to a Cingular as a limited liability company named Cingular Southwestern Bell Mobile Systems, LLC. The company existed until 2006 when it was dissolved.[1]
Southwestern Bell Mobile Systems' physical assets survive in what is now AT&T Mobility.
^Missouri Secretary of State, Filed Documents for Cingular Southwestern Bell Mobile Systems, LLC
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