Both went public with their inventions in 1839 ... of experiments with pain relief for surgery patients during the first half of the 19th century, and in October 1846 dentist William Morton ...

Invented in the late 19th century ... his invention to government agencies in the United States and Europe as a reliable means for transporting artillery and supplies to the front lines during ...

As a result, historians can identify only four African-American women who were granted patents for their inventions between 1865, the end of the Civil War, and the turn of the 19th century.

During the 19th century, economic and industrial growth continued to develop, and people made many scientific discoveries and inventions. Scientists made rapid progress in identifying and ...