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Inventions

Inventions
Who invented the BALLPOINT PEN?

Write Brothers
Biro Brothers
Bicc Brothers
Waterman Brothers

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Inventions
Where was the yo-yo invented?

France
Philippines
England
United States

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Inventions
What Thomas Davenport invented?

Chesterfield
Screw propellor
Sleeping (railway) car
Electric streetcar

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Inventions
In which decade were the first successful diode and triode vacuum tubes invented?

1880s
1890s
1900s
1800s

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Inventions
What African-American inventor received 5 patents in the field of shoemaking?

Lewis Latimer
Ernest Just
Elijah McCoy
Jan Ernst Matzeliger

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Inventions
CORN FLAKES - Who made them first?

Archers
Kellogg
Nabisco
Quaker

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