What device for new parents did Ann Moore invent in 1969?
Answer: D
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What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?
Answer: A
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What charge card, developed in 1950, was the first to be accepted nationally in the US?
Answer: D
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What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?
Answer: C
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Who invented waterproof fabrics ?
Answer: D
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Who invented Fountain Pen?
Answer: C
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Microphone
Answer: B
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Waterproof Rubber
Answer: D
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First combine harvester was invented in 1834 by
Answer: A
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Who discovered oxygen?
Answer: C
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