1940 (Univ of California Press, 1994) Huurdeman, Anton A. (2003). The Worldwide History of Telecommunications Hoboken: NJ: Wiley-IEEE Press. John, Richard R. (2010). Network Nation: Inventing American Telecommunications. Cambridge, MA: Harvard University Press. MacDougall, Robert. The People's Network: The Political Economy of the Telephone in the Gilded Age. Philadelphia: University of Pennsylvania Press. Mueller, Milton. (1993) "Universal service in telephone history: A reconstruction." Telecommunications Policy 17.5 (1993): 352–69. Todd, Kenneth P. (1998), A Capsule History of the Bell System. American Telephone & Telegraph Company (AT&T). External links Early U.S. Telephone Industry Data Virtual museum of early telephones The Telephone, 1877 —Telegraphy (Bell's first telephone patent)—Alexander Graham Bell US 186,787—Electric Telegraphy (permanent magnet receiver)—Alexander Graham Bell US 474,230—Speaking Telegraph (graphite transmitter)—Thomas Edison US 203,016—Speaking Telephone (carbon button transmitter)—Thomas Edison US 222,390—Carbon Telephone (carbon granules transmitter)—Thomas Edison US 485,311—Telephone (solid back carbon transmitter)—Anthony C. White (Bell engineer) This design was used until 1925 and installed phones were used until the 1940s. US 3,449,750—Duplex Radio Communication and Signalling Apparatus—G. H. Sweigert US 3,663,762—Cellular Mobile Communication System—Amos Edward Joel (Bell Labs) US 3,906,166—Radio Telephone System (DynaTAC cell phone)—Martin Cooper et al. (Motorola) 1876 introductions American inventions Canadian inventions Discovery and invention controversies German inventions Scottish inventions Office equipment Telecommunications equipment Articles containing video clips Home appliances 19th-century inventions