Invention: Mobile Telephone

New Yorkers gaped in amazement when they saw Cooper making a phone call on the street.

In 1973, Dr. Martin Cooper was the first to demonstrate a handheld cellular telephone.

The invention was possible because back in;

1971. The microprocessor was invented.

1946. The computer was invented.

1895. The radio was invented.

1876. The land lined telephone was developed.

1800. A reliable battery was invented.