When was the Raggedy Ann doll patented?
When was the Raggedy Ann doll patented?
When was barb wire patented?
When was barb wire patented?
What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent?
What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent?
What Frank Whittle invented?
What Frank Whittle invented?
What James Watt invented?
What James Watt invented?
What Benjamin Franklin invented?
What Benjamin Franklin invented?
Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear?
Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear?
What invention caused many deaths while testing it?
What invention caused many deaths while testing it?
Where is the village of Branston, after which the famous pickle is named?
Where is the village of Branston, after which the famous pickle is named?
Who invented Bicycle?
Who invented Bicycle?
What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955?
What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955?
Which scientist discovered the radioactive element radium?
Which scientist discovered the radioactive element radium?
What J. B. Dunlop invented?
What J. B. Dunlop invented?
Who invented Gunpowder?
Who invented Gunpowder?
Who invented Jet Engine?
Who invented Jet Engine?
What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes ?
What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes ?
In which decade was the first solid state integrated circuit demonstrated?
In which decade was the first solid state integrated circuit demonstrated?
Who synthesized the first wholly artificial gene?
Who synthesized the first wholly artificial gene?
What Sir Isaac Newton invented?
What Sir Isaac Newton invented?
FROZEN FOOD - Who discovered the first practical method of freezing food?
FROZEN FOOD - Who discovered the first practical method of freezing food?