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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.
While Alexander Graham Bell will be best remembered as the inventor of the telephone, a claim he sustained through many legal contests, he also became noted for other inventions. With Sumner Tainter he invented the gramophone. He invented a new method of lithography, a photophone, and an induction balance.