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      Knowledge is Power

      Scientific American December 16, 1916

      Recently Patented Inventions- December 16, 1916

      • December 16, 1916

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      More in the December 16, 1916 issue of Scientific American
      • Trench Chiropody, The Military Man-Power of the United States, and more
      • New York's Army of Snow Fighters
      • The Motor-Driven Commercial Vehicle- December 16, 1916
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