- When was helicopter Invented?
- Jet Engine was invented by_____________?
- Radio was invented by_____________in 1895?
- Edwin Budding who invented Lawnmover belongs to__________?
- Bulb was invented by?
- Who invented the safety pin?
- Gulf war started in________?
- When was the game Frisbee invented?
- In 1940, first electronic computer was invented by_______?
- The Battery was invented by?
- The US president who invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel was___________?
- Which number is considered lucky in Italy?