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      Scientific American September 09, 1916

      Recently Patented Inventions- September 9, 1916

      • September 9, 1916

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      More in the September 09, 1916 issue of Scientific American
      • Large Telescope Built by Students, What the Telephone Means to the Fighting Men of Europe
      • Auto Repair Trucks for Field Service
      • Clearing of Fog by Electrical Precipitation
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