telephone history

By raphaelagarces
  • Innocenzo Manzetti first provided the idea of a “speaking telegraph” (telephone).

    Innocenzo Manzetti first provided the idea of a “speaking telegraph” (telephone).

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • April 6, 1875: Bell's U.S. Patent 161,739 "Transmitters and Receivers for Electric Telegraphs" is granted

    April 6, 1875: Bell's U.S. Patent 161,739 "Transmitters and Receivers for Electric Telegraphs" is granted

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • July 1, 1875: Bell uses a bi-directional "gallows" telephone that was able to transmit "voicelike sounds", but not clear speech.

    July 1, 1875: Bell uses a bi-directional "gallows" telephone that was able to transmit "voicelike sounds", but not clear speech.

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • Tivadar Puskás invented the telephone switchboard exchange

    Tivadar Puskás invented the telephone switchboard exchange

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • 1877: First long-distance telephone line

    1877: First long-distance telephone line

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • January 28, 1878: The first commercial telephone exchange opened in New Haven, Connecticut.

    January 28, 1878: The first commercial telephone exchange opened in New Haven, Connecticut.

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • Tivadar Puskás introduced the multiplex switchboard.

    Tivadar Puskás introduced the multiplex switchboard.

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • first iphone

    first iphone

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.
  • iphone 6

    iphone 6

    Meyers J, (may 6, 2011). Watch the incredible evolution of the telephone. retrieved on oct 15,2014. Business insider INC.