British-born American inventor who received the first patent for the telephone (1876). Bell also invented the audiometer, an early hearing aid, and improved the phonograph.
Scottish-born American scientist and inventor whose lifelong interest in the education of deaf people led him to conceive the idea of transmitting speech by electric waves. In 1876 his experiments with a telegraph resulted in his invention of the telephone. He later produced the first successful sound recorder, an early hearing aid, and many other devices.
The inventor of the telephone. He patented the telephone on February 14, 1876, filing his application on the same day as Elisha Gray of Western Union. He refined the telephone with the help of Thomas Edison. He also contributed to the education of the deaf, by researching a machine to make sound understandable, which fed into his ideas about the telephone.