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      Digital & 4-Year Archive

      Scientific American December 22, 1900

      Recently Patented Inventions - December 22, 1900

      • December 22, 1900

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      More in the December 22, 1900 issue of Scientific American
      • A New Ratchet-Wrench
      • Business and Personal - December 22, 1900
      • Notes and Queries - December 22, 1900
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