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Inventions

Inventions
In which year was MIDI introduced?

1977
1973
1987
1983

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Inventions
When was the toothbrush invented?

1790
1770
1765
1742

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Inventions
What Thomas Davenport invented?

Electric streetcar
Chesterfield
Screw propellor
Sleeping (railway) car

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Inventions
When was barb wire patented?

1895
1900
1840
1874

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Inventions
What toy was invented by Joshua Lionel Cowen around 1900?

Electric train
Tinkertoys
Raggedy Ann doll
Yo-yo

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Inventions
Who invented the BALLPOINT PEN?

Waterman Brothers
Write Brothers
Biro Brothers
Bicc Brothers

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