Inventors and Scientific Discoveries

Hans von Ohain is recognized as the designer of the first operational jet engine. While the prompt mentions airplane and jet engine, Ohain is the key figure for the jet engine.

Ian Wilmut and his team at the Roslin Institute successfully cloned Dolly the sheep in 1996. This was the first mammal cloned from an adult somatic cell.

J. Robert Oppenheimer was the scientific director of the Manhattan Project. He is widely known as the father of the atomic bomb.

Karl Benz is credited with the invention of the first modern automobile powered by an internal combustion engine in 1886.

John Napier introduced logarithms to the mathematical world in 1614. His work significantly simplified complex calculations.

Luc Montagnier (misspelled as Mortagnier in the question) co-discovered the HIV virus in 1983, for which he shared a Nobel Prize. Note that HIV was discovered, not invented - the question uses incorrect terminology.

Sir Godfrey Hounsfield, a British electrical engineer, is credited with the invention of the CT scanner, for which he shared the Nobel Prize in 1979.

Anthrax is a skin disease which affects sheep and cow and was discovered by Robert Koch.

Cell was first discovered by Robert Hooke in 1665.

Wernher von Braun was a German-born aerospace engineer and space architect who is considered the father of rocket technology and the V-2 ballistic missile.

Wilhelm Conrad Roentgen discovered X-rays in 1895 while experimenting with cathode rays, for which he received the first Nobel Prize in Physics.

Count Ferdinand von Zeppelin was a German general and inventor who developed the rigid airship, which became known as the Zeppelin.

James Spangler, a janitor, invented the first portable electric vacuum cleaner in 1907, which he later sold to William Hoover.

Pierre Eugene Marcellin Berthelot, a French chemist, is credited with the discovery and synthesis of acetylene gas.