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      Knowledge is Power

      Scientific American September 02, 1916

      Inventions New and Interesting- September 2, 1916

      Simple Patent Law; Patent Office News; Notes on Trademarks

      • September 2, 1916

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      More in the September 02, 1916 issue of Scientific American
      • Artisans of the Motion Picture Films
      • New Types of Artificial Arms for Victims of the War
      • Blazing a Trail for the Industries
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