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Formation of the Bell Telephone Company, then the American Bell Telephone Company (July 9, 1877 – March 1880)


The Bell Telephone Company was organized in Boston, Massachusetts on July 9, 1877 by Alexander Graham Bell's father-in-law Gardiner Greene Hubbard, who also helped organize a sister company — the New England Telephone and Telegraph Company. The Bell Telephone Company was started on the basis of holding "potentially valuable patents," principally Bell's master telephone patent #174465. Renamed the National Bell Telephone Company in March 1879, it became the American Bell Telephone Company in March 1880.