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Showing posts with label Rotary dial telephone. Show all posts
Showing posts with label Rotary dial telephone. Show all posts

26 September 2012

Rotary dial telephone



The invention:

The first device allowing callers to connect their
telephones to other parties without the aid of an operator, the rotary
dial telephone preceded the touch-tone phone.

The people behind the invention:

Alexander Graham Bell (1847-1922), an American inventor
Antoine Barnay (1883-1945), a French engineer
Elisha Gray (1835-1901), an American inventor