HISTORY OF TELEPHONE

In the 1870s, two inventors Elisha Gray and Alexander Graham Bell both independently designed devices that could transmit speech electrically (the telephone). Both men rushed their respective designs to the patent office within hours of each other, Alexander Graham Bell patented his telephone first. Elisha Gray and Alexander Graham Bell entered into a famous legal battle over the invention of the telephone, which Bell won. ( Marrry Bellis , 2007 )

PICTURES SHOWS HOW ALEXANDER GRAHAM BELL COMMUNICATE WITH TELEPHONE :

ALEXANDER GRAHAM BELL FIRST PATTERN :