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Patents
Jun 13, 2026
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American Bell Telephone Company
Jun 09, 2026
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Bell Telephone Laboratories, 1956-1960
Jun 08, 2026
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American Telephone and Telegraph Co., 1931-1940
Jun 07, 2026
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created by
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Bell Telephone Laboratories, 1951-1955
Jun 07, 2026
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Western Union, 1850-1950
Jun 07, 2026
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Bell Telephone Laboratories, 1961-1965
Jun 07, 2026
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Bell Telephone Laboratories, 1946-1950
Jun 07, 2026
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Bell Telephone Laboratories, 1931-1940
Jun 07, 2026
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Bell Telephone Laboratories, 1926-1930
Jun 07, 2026
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Automatic Electric Co., 1880-1920
Jun 07, 2026
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American Telephone and Telegraph Co., 1921-1930
Jun 07, 2026
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Shaun Ewing
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American Telephone and Telegraph Co., 1880-1920
Jun 07, 2026
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updated by
Shaun Ewing
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Western Union, 1951-1975
Jun 07, 2026
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Western Electric, 1880-1900
Jun 07, 2026
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