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INVENTIONS

Inventions
Who invented the BALLPOINT PEN?

Waterman Brothers
Write Brothers
Bicc Brothers
Biro Brothers

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

1980s
1970s
1950s
1960s

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Inventions
What J. B. Dunlop invented?

Pneumatic rubber tire
Rubber boot
Automobile wheel rim
Model airplanes

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Inventions
Which scientist discovered the radioactive element radium?

Marie Curie
Benjamin Franklin
Albert Einstein
Isaac Newton

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Inventions
When was barb wire patented?

1840
1900
1874
1895

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