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      Scientific American November 19, 1910

      Cutting a Worm Wheel with a Tap

      • By J. A. Berstrom on November 19, 1910

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      More in the November 19, 1910 issue of Scientific American
      • Aeronautics- November 19, 1910
      • Index of Inventions- November 19, 1910
      • Recently Patented Inventions- November 19, 1910
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