Article Detail Who invented Laptop ? Answer: Adam Osborne in 1981. Similar Questions : 1. Who invented Nylon ? Answer: Wallace Carothers 2. Who invented Vitamin A ? Answer: Mc Collum and M.Davis of U.S.A. in 1913 3. Who invented Vitamin D ? Answer: Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922 4. Who invented Gramophone ? Answer: Emile Berliner in 1887. 5. Who invented Piano ? Answer: Bartolomeo Cristofori 6. Who invented Logarithms ? Answer: John Napier (Scotland) invented Logarithm 7. Who invented Safety Pin ? Answer: Walter Hunt of U.S.A. in 1849 Read more from - Important Inventions