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INVENTIONS

Inventions
Who invented the BALLPOINT PEN?

Biro Brothers
Waterman Brothers
Write Brothers
Bicc Brothers

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

1970s
1980s
1950s
1960s

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Inventions
What J. B. Dunlop invented?

Automobile wheel rim
Model airplanes
Pneumatic rubber tire
Rubber boot

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Inventions
Which scientist discovered the radioactive element radium?

Albert Einstein
Isaac Newton
Marie Curie
Benjamin Franklin

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Inventions
When was barb wire patented?

1900
1840
1895
1874

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