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Inventions

Inventions
What Benjamin Franklin invented?

Hygrometer
Barometer
Bifocal spectacles
Radio

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

Bottle warmer
Infant carrier
Disposable diaper
Baby monitor

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Inventions
When was the toothbrush invented?

1770
1790
1742
1765

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

Marjorie Joyner
Amanda Jones
Margaret Knight
Mary Kies

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

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

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Inventions
Who synthesized the first wholly artificial gene?

Benjamin Franklin
Hargobind Khorana
J.J. Thompson
Meghnad Saha

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