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Inventions

Inventions
In which year was MIDI introduced?

1983
1977
1973
1987

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Inventions
Which of the following was first patented by an Australian in 1889?

Electric Drill
Electric Shaver
Electric Fence
Electric Heater

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Inventions
When was the Raggedy Ann doll patented?

1919
1911
1915
1920

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Inventions
Who developed the idea of Crop Rotation?

Swede Svenson
Turnip Townsend
Cabbage Carlson
Potato Peterson

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

1890s
1800s
1880s
1900s

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Inventions
What device for new parents did Ann Moore invent in 1969?

Disposable diaper
Baby monitor
Infant carrier
Bottle warmer

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