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A jazz musician named Teri Pall invented a version of the cordless phone in 1965 but could not market her invention, as its 2-mile (3.2 km) range caused its radio signals to interfere with aircraft communications. In 1968, she sold her rights to the cordless phone to a manufacturer who modified it for practical use.
Updated June 30, 2017. Elisha Gray was an American inventor who contested the invention of the telephone with Alexander Graham Bell. Elisha Gray invented a version of the telephone in his laboratory in Highland Park, Illinois. Background - Elisha Gray 1835-1901. Elisha Gray was a Quaker from rural Ohio who grew up on a farm. He studied electricity at Oberlin College.