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      Knowledge is Power

      Scientific American January 28, 1911

      The Inventor's Department- January 28, 1911

      Simple Patent Law; Patent Office News; Inventions New and Interesting

      • January 28, 1911

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      More in the January 28, 1911 issue of Scientific American
      • Correspondence- January 28, 1911
      • Science in the Current Periodicals- January 28, 1911
      • The Schilowsky Low-speed Gyroscope Monorail
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