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1983-1993

SBC Ameritch was established as Ameritech in 1983 as a spinoff of AT&T, with the Bell logo carried over.

Bell logo 1969 blue.svg
Ameritech 1984.svg

1993–2003

Ameritech logo 1993.png

Following Ameritech's merger with SBC Communications in 1999, this logo was often used in association with the "SBC Global Network" logo:

SBC Ameritech 1999.png

2002–2003

SBC Amertiech 2002.svg
Bell System
Ameritech
SBC Communications
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