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      Digital & 4-Year Archive

      Scientific American August 23, 1873

      Recent American and Foreign Patents - August 23, 1873

      • August 23, 1873

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      More in the August 23, 1873 issue of Scientific American
      • Communications Received - August 23, 1873
      • Index of Inventions - August 23, 1873
      • The Cooper Portable Engine
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