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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.
The cordless phone was further developed by George Sweigert, an amateur radio operator and inventor from Cleveland, Ohio. In 1966 he submitted a patent for a cordless phone (âfull duplex wireless communications apparatusâ) with The U.S. Patent and Trademark Office and was awarded the patent in 1969.