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INVENTIONS

Inventions
Who invented the BALLPOINT PEN?

Bicc Brothers
Waterman Brothers
Biro Brothers
Write Brothers

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Inventions
In which decade was the first solid state integrated circuit demonstrated?

1950s
1960s
1980s
1970s

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Inventions
What J. B. Dunlop invented?

Model airplanes
Automobile wheel rim
Pneumatic rubber tire
Rubber boot

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Inventions
Which scientist discovered the radioactive element radium?

Marie Curie
Isaac Newton
Albert Einstein
Benjamin Franklin

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Inventions
When was barb wire patented?

1840
1874
1900
1895

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