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Inventions

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

1900s
1800s
1890s
1880s

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Inventions
Who was the first American female to patent her invention, a method of weaving straw with silk?

Mary Kies
Marjorie Joyner
Amanda Jones
Margaret Knight

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Inventions
Who invented the first controllable flying AEROPLANE (AIRPLANE)?

South Brothers
Wright Brothers
Lidenbergh Brothers
West Brothers

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Inventions
What item, originally called the 'Whirlwind', was invented by Ives McGaffey in 1869?

Blender
Washing machine
Vacuum cleaner
Electric mixer

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Inventions
What groovy item was invented by Englishman Edward Craven Walker in 1963?

Eight-track tape deck
Hot comb
Leisure suit
Lava lamp

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Inventions
FROZEN FOOD - Who discovered the first practical method of freezing food?

C. Birdsey
F. Rozenosh
G. Findus
R. Scott

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