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      Knowledge is Power

      Scientific American October 10, 1874

      Improved Pipe and Bolt Threader, Cutter, and Nut Tapping Machine

      • October 10, 1874

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      More in the October 10, 1874 issue of Scientific American
      • Answers to Correspondents - October 10, 1874
      • Decisions of the Courts - October 10, 1874
      • Recent American and Foreign Patents - October 10, 1874
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