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What did they invent?

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Question
Answer
What did Mary Anderson invent?   Windscreen wipers  
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Who invented chewing gum?   Thomas Adams  
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When James Henry invent mouse trap?   in 1897  
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Who invented dishwasher?   Josaphine Cochran  
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When Dutchman invent roller skates?   in 18th century  
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Who invent Apple?   Steve Jobs  
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Who invent law off gravitation?   Isaac Newton  
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Who invent Windows?   Bill Gates  
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When Larry Page invent Google?   in 1998  
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When Mark Zukerberg invent Facebook?   in 2004  
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