GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When was the first vacuum cleaner invented?
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1862
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1864
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1869
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1867
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Explanation:
Detailed explanation-1: -In 1860 a manual vacuum cleaner was invented by Daniel Hess of West Union, Iowa. Called a “carpet sweeper “, It gathered dust with a rotating brush and had a bellows for generating suction. Another early model (1869) was the “Whirlwind", invented in Chicago in 1868 by Ives W. McGaffey.
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