What inspired reflecting road lights to be invented?
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When were blue jeans invented? |
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Who invented Electric Generator? |
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What device for new parents did Ann Moore invent in 1969? |
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In which decade was the transistor invented? |
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What Igor Sikorsky invented? |
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What Henry Bessemer invented? |
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What invention was first installed at a Hartford, Connecticut bank in 1889? |
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Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that? |
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Who invented Bifocal Lens? |
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What Karl Benz invented? |
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