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    4. who invented the electrical outlet
    who invented the electrical outlet

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    +1  Views: 528 Answers: 1 Posted: 14 years ago
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      1 Answer

      The original two prong electrical plug and socket were invented by Harvey Hubbell and patented in 1904.


      The three prong plug was invented in 1928 by Philip F. Labre.


      (Paul Ding)

      14 years ago. Rating: 1
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