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      Knowledge is Power

      Scientific American July 1935

      Wings that Turn

      Possibilities of Rotating Wing Aircraft, Vertical Rising, High-Speed, Roof-Top Landing

      • By Reginald M. Cleveland on July 1, 1935

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      More in the July 1935 issue of Scientific American
      • All-Wave Reception
      • New Light on Ancient Technical Pogress
      • Progress in This Age of Science as Told to Scientific American, July 1935
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