Article Detail Who invented Helicopter ? Answer: Igor Sikorsky Similar Questions : 1. Who invented Radiocarbon ? Answer: Willard Libby 2. Who invented paper ? Answer: Cai Lun 3. Who invented Machine Gun ? Answer: Helge Palmcrantz, Swedish inventor and industrialist 4. Who invented Locomotive ? Answer: George Stephenson was first to buit steam locomotives. 5. Who invented Transformer ? Answer: Ottó Bláthy 6. Who invented Submarine ? Answer: John Philip Holland 7. Who invented Aspirin ? Answer: Felix Hoffmann invented Aspirin Read more from - Important Inventions