-
Acoustic Experiments
Alexander Graham Bell conducts acoustics experiments with Clarence Blake, a Boston ear specialist. They begin experimenting with the mechanics of the human ear. -
The Idea of the Telephone
In Brantford, Ontario, Bell first conceives the idea of the telephone and makes his original sketch. -
The Spread of Idea
Bell visits scientist Joseph Henry and explains to him his idea of the telephone. Henry recognizes the significance of Bell's work and offers him encouragement. -
The Telephone Application
Bell's telephone application is filed at the United States Patent Office. -
The Beginning
In the beginning Bell developed The "Harmonic Telegraph" was based on the principal that musical notes could be sent simultaneously down the same wire, if those notes differed in pitch. -
Patent Issued
United States Patent No. 174,465 is officially issued for Bell's telephone. -
First Telephone Call
a telephone call is made for the first time when Bell calls to Watson, "Mr. Watson. Come here. I want to see you." -
Public Demonstrations
Bell attracts the attention from many people and give the first demonstration of the telephone for Sir William Thomson and Emperor Pedro II of Brazil at the Centennial Exhibition in Philadelphia. -
The Telephone Company
Bell, Gardiner Greene Hubbard, Thomas Sanders, and Thomas Watson form the Bell Telephone Company. -
First Commercial Telephone Exchange
First commercial telephone exchange in the world opened at New Haven, Conn. -
Development of Telephone Numbers
Telephone subscribers began to numbers rather than names. This allows more subscribers per switching station. -
Second Telephone Service Opening
Opening of telephone service between Boston and New York, 235 miles. -
Automatic Dial System
The first automatic dial system was patented by a Kansas City undertaker. Switchboard operators were no longer needed. -
First Coin Telephone
The first coin telephone was installed in Hartford, Connecticut. -
Introdution of Touch Tone Phone
Bell System introduces the touch tone phone. This telephone made a different beep for each number instead of counted clicks for each number.
