Difficulty: Easy
Correct Answer: Vacuum cleaner (hand-operated)
Explanation:
Given
Explanation
McGaffey patented an early hand-cranked vacuum cleaner known as the ‘‘Whirlwind,’’ predating motorized suction cleaners and distinct from carpet sweepers.
Eliminating distractors
Carpet sweepers (e.g., by Spangler or earlier) differed; washers and fans are unrelated to McGaffey's 1869 patent.
Final Answer
Vacuum cleaner (hand-operated).
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