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Revision as of 00:39, 15 April 2008 by CapitalR (talk | contribs) (Tnavbar-collapsible)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)| Bell System | |
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| Corporate Operations | |
| Holding Company: | American Telephone & Telegraph |
| Local Telephone Operations | |
| Bell Operating Companies: | Bell Telephone Company of Nevada · The Bell Telephone Company of Pennsylvania · The Chesapeake & Potomac Telephone Company · The Chesapeake & Potomac Telephone Company of Maryland · The Chesapeake & Potomac Telephone Company of West Virginia · The Chesapeake & Potomac Telephone Company of Virginia · Diamond State Telephone · Illinois Bell · Indiana Bell · Michigan Bell · Mountain Bell · New England Telephone & Telegraph · New Jersey Bell · New York Telephone · Northwestern Bell · Ohio Bell · Pacific Northwest Bell · Pacific Telephone · South Central Bell · Southern Bell · Southwestern Bell · Wisconsin Telephone |
| Franchisees: | Southern New England Telephone · Cincinnati Bell |
| Other AT&T Subsidiaries | |
| Manufacturing: | Western Electric |
| R&D Operations: | Bell Labs |
| Long Distance Services: | AT&T Long Lines |
| Wireless Services: | Advanced Mobile Phone Service |