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  1. May 2025
  2. en.wikipedia.org en.wikipedia.org
    Eversharp - Wikipedia
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    1. chrisaldrich 28 May 2025
      Keeran is considered a pioneer maker of mechanical pencils,[3] as the inventor of the first successful one.
      inventors Charles Rood Keeran Eversharp pencils mechanical pencils
    2. chrisaldrich 28 May 2025

      https://en.wikipedia.org/wiki/Eversharp

      Eversharp pens Eversharp pencils mechanical pencils Charles Rood Keeran
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    en.wikipedia.org/wiki/Eversharp