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07/03/1876 Telephone is patented

6:24

The history of the telephone

8:29

The Invention Of The Telephone I THE INDUSTRIAL REVOLUTION

10:03

The First Telephone

1:32

This Is Alexander Graham Bell's Voice

2:34

The Invention of The Telephone

American inventor patented an "Improvement in Telegraphy,” which is now called the telephone. Bell himself considered his invention an intrusion on his real work as a scientist and refused to have the telephone in his study. Some scholars claim that Bell stole the telephone idea from another American inventor Elisha Gray.
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    • Essentials 

    • Early development 

    • Electro-magnetic transmitters and receivers 

    • Variable resistance transmitters 

    • Improvements to the early telephone 

    • Controversies 

    • Memorial to the invention