On This Day in Telephone History March 20TH 1880 the American Bell Telephone Company, successor to the National Bell Telephone Company, was formed to carry-on the consolidation of Bell and Western Union properties (certificate of incorporation dated April 17TH ). This company remained parent company of the Bell System until December 30. 1899.

On This Day in Telephone History March 20TH 1880

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On This Day in Telephone History March 20TH 1880 the American Bell Telephone Company, successor to the National Bell Telephone Company, was formed to carry-on the consolidation of Bell and Western Union properties (certificate of incorporation dated April 17TH ). This company remained parent company of the Bell System until December 30. 1899.