Alexander Graham Bell

I believe you are asking what did Alexander Graham Bell invent. Bell made several inventions but the one he is most famous for is the telephone (hence Bell telephone company).

Bell also invented many other devices. Some of them include

the telegraph

a metal jacket to assist in breathing

the phonograph

the audiometer to detect minor hearing problems

and a device to locate icebergs.

mr bell.end

You didn't. The first phone was not sold to the public and was a simple box. It wasn't until 1877 that there was a Bell phone company.

Inventor Alexander Graham Bell had a somewhat normal childhood. He was curious about the world and loved poetry, art, and music. His two brothers both died from tuberculosis.

a suit