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      Digital & 4-Year Archive

      Scientific American September 27, 1890

      Recently Patented Inventions- September 27, 1890

      • September 27, 1890

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      More in the September 27, 1890 issue of Scientific American
      • Books- September 27, 1890
      • Leveler for Traction Engines
      • Testing Armor Plates for Our War Vessels
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