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The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward. In the 20th century, the American Telephone and Telegraph Company (AT&T) dominated the telecommunication market as the at times largest company in the world, until it was broken up and replaced by a system of competitors.
30 October 1891: The independent Strowger Automatic Telephone Exchange Company is formed. 3 May 1892: Thomas Edison awarded patents for the carbon microphone based on applications lodged in 1877. 18 October 1892: Opening of telephone service between New York and Chicago (950 miles).
Telephone and Data Systems, Inc. is a Chicago -based telecommunications service company providing wireless products and services; cable and wireline broadband, TV and voice services; and hosted and managed services to approximately 6 million customers nationwide through its business units TDS Telecom and U.S. Cellular ( NYSE : USM) and OneNeck ...
Website. chipublib.org. The Chicago Public Library ( CPL) is the public library system that serves the City of Chicago in the U.S. state of Illinois. It consists of 81 locations, including a central library, three regional libraries, and branches distributed throughout the city's 77 Community Areas. [5]
Government of Chicago. The government of the City of Chicago, Illinois, United States is divided into executive and legislative branches. The Mayor of Chicago is the chief executive, elected by general election for a term of four years, with no term limits. The mayor appoints commissioners and other officials who oversee the various departments.
Illinois Bell Telephone Company, LLC is the Bell Operating Company serving Illinois.It is owned by AT&T through AT&T Teleholdings, formerly Ameritech.. Their headquarters are at 225 West Randolph St., Chicago, IL.
AT&T Communications. AT&T Corporation, commonly referred to as AT&T, an abbreviation for its former name, the American Telephone and Telegraph Company, was an American telecommunications company that provided voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.
The Chicago Telephone Company Kedzie Exchange is a historic telephone exchange building located at 17 S. Homan Avenue in the East Garfield Park neighborhood of Chicago, Illinois, United States . Built in 1906–07, it was one of the many telephone exchanges built in Chicago in the late 19th and early 20th centuries as telephone use grew rapidly.