Article Detail Who invented Vitamin A ? Answer: Mc Collum and M.Davis of U.S.A. in 1913 Similar Questions : 1. Who invented Air Conditioning ? Answer: Willis Carrier in 1902 2. Who invented Radar ? Answer: Sir Robert Watson-Watt 3. Who invented Gramophone ? Answer: Emile Berliner in 1887. 4. Who invented CT scan ? Answer: Hounsfield by Britain in 1973. 5. Who invented HIV ? Answer: Dr Robert Gallo invented HIV test 6. Who invented Chloroform as anaesthetic ? Answer: James Simpson of Britain in 1847. 7. Who invented Vitamin B1 ? Answer: Casimir Funk discovered in 1912 Read more from - Important Inventions