General Knowledge :: Inventions
- Who invented the BALLPOINT PEN?
- In which decade was the first solid state integrated circuit demonstrated?
- What J. B. Dunlop invented?
- Which scientist discovered the radioactive element radium?
- What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?
- Where is the village of Branston, after which the famous pickle is named?
- Who invented Jet Engine?
- What invention caused many deaths while testing it?
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