When was the intercom invented?

Answer 1

"Bell didn't really invent the telephone:

lacked key features we associate with the phone

-a ringer (invented two years after Bell's patent)

-a dial (invented by Edison)

Bell invented the Intercom

-Edison probably did more to turn it into a telephone than anyone, We even adopt his greeting (Hello) in preferences to Bell's (Ahoy)

But Bell invented something far more important

-Microphones and Speakers"

http://evolutionarymedia.com/cgi-bin/wiki.cgi?MediumAsInterface,template.html

"Bell didn't invent the telephone, He invented microphones and speakers, As a system, he invented the intercom.

Users created the telephone:

By demanding ways to call multiple endpoints

By requiring easier to use summons signals

By creating new ways to use the telephone

By adopting means of behavior"

http://foulger.info/davis/presentations/spheresOfInvention.htm

While Alexander Graham Bell may not have been the first to invent the telephone, he was the first to patent it.

Based on his invention:

"Intercommunicating Telephone System (Intercom)

The Kellogg intercom phone...was patented in 1894."

http://www.officemuseum.com/communications_equipment.htm

Answer 2

The first intercom-like device was invented In the 1850's. French inventor/magician Jean Eugene Robert-Houdin developed it for use in his home.

Answer 3

In the early 20th Century.