Article Detail Who invented watch ? Answer: Peter Henlein invented the first portable time piece in 1504 Similar Questions : 1. Who invented Penicillin ? Answer: Alexander Fleming of Britain in 1928. 2. Who invented Logarithms ? Answer: John Napier (Scotland) invented Logarithm 3. Who invented Vitamin K ? Answer: Doisy Dam of U.S.A. in 1938. 4. Who invented HIV ? Answer: Dr Robert Gallo invented HIV test 5. Who invented Neutron ? Answer: JAMES CHADWICK in 1932 6. Who invented Chemotherapy ? Answer: Paracelsus of Switzerland 7. Who invented Vaccine of Rabies ? Answer: Louis Pasteur of France in 1885 Read more from - Important Inventions