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      Scientific American September 09, 1876

      Improved Pipe Cutting and Threading Machine - September 9, 1876

      • September 9, 1876

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      More in the September 09, 1876 issue of Scientific American
      • Communications Received - September 9, 1876
      • New Chemical and Miscellaneous Inventions - September 9, 1876
      • Practical Mechanism - September 9, 1876
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