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      Scientific American July 06, 1907

      An Electrolytic Rectifier for Amateurs

      How it Can be Made at Home

      • By Frederick E. Ward on July 6, 1907

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      More in the July 06, 1907 issue of Scientific American
      • An Automobile Vacuum Cleaning Plant
      • Soldering and Soldering Processes
      • The Atmosphere of Cities
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