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INVENTIONS

Inventions
Who invented the BALLPOINT PEN?

Write Brothers
Bicc Brothers
Biro Brothers
Waterman Brothers

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

1970s
1960s
1950s
1980s

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Inventions
What J. B. Dunlop invented?

Model airplanes
Rubber boot
Automobile wheel rim
Pneumatic rubber tire

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Inventions
Which scientist discovered the radioactive element radium?

Benjamin Franklin
Albert Einstein
Isaac Newton
Marie Curie

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Inventions
When was barb wire patented?

1840
1895
1900
1874

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