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INVENTIONS

Inventions
Who invented the BALLPOINT PEN?

Biro Brothers
Bicc Brothers
Write Brothers
Waterman Brothers

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

1980s
1950s
1970s
1960s

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Inventions
What J. B. Dunlop invented?

Pneumatic rubber tire
Rubber boot
Model airplanes
Automobile wheel rim

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Inventions
Which scientist discovered the radioactive element radium?

Benjamin Franklin
Isaac Newton
Albert Einstein
Marie Curie

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Inventions
When was barb wire patented?

1900
1874
1840
1895

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