Title: telephone | History, Definition, Invention, Uses, & Facts | Britannica
Headings: Telephone
Telephone
Learn how Alexander Graham Bell went to revolutionize telegraphy but instead invented the telephone
What is a telephone?
When was the telephone patented?
When was the telephone introduced to the public?
Who is credited as the inventor of the telephone?
When did the first transmission of speech occur with a telephone?
The telephone instrument
Working components of the telephone
Power source
Switch hook

Content: On February 14, 1876, Alexander Graham Bell applied for a U.S. patent for the telephone. On March 7, 1876, Bell was awarded U.S. patent 174,465. This patent is often referred to as the most valuable ever issued by the U.S. Patent Office, as it described not only the telephone instrument but also the concept of a telephone system. When was the telephone introduced to the public? One of the earliest demonstrations of the telephone occurred in June 1876 at the Centennial Exposition in Philadelphia. Who is credited as the inventor of the telephone? Alexander Graham Bell is credited with developing the telephone because he received the first patent. When did the first transmission of speech occur with a telephone? The first transmission of speech with a telephone occurred on March 10, 1876, from Alexander Graham Bell to Thomas Watson, which Bell transcribed in his lab notes as “Mr. Watson—come here—I want to see you.” This article describes the functional components of the modern telephone and traces the historical development of the telephone instrument.