Article Detail Who invented Atomic theory ? Answer: Dalton of Britain in 1803. Similar Questions : 1. Who invented Relativity Theory ? Answer: Einstein of Germany in 1905. 2. Who invented Proton ? Answer: Ernest Rutherford 3. Who invented HIV ? Answer: Dr Robert Gallo invented HIV test 4. Who invented Steam Engine ? Answer: Thomas Savery of Britain in 1698 5. Who invented Vitamin B1 ? Answer: Casimir Funk discovered in 1912 6. Who invented Air Conditioning ? Answer: Willis Carrier in 1902 7. Who invented Safety Pin ? Answer: Walter Hunt of U.S.A. in 1849 Read more from - Important Inventions