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      Knowledge is Power

      Scientific American October 22, 1904

      A Novel Interrupter for Induction Coils

      By our Berlin correspondent

      • October 22, 1904

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      More in the October 22, 1904 issue of Scientific American
      • Automobile Road Racing
      • Notes and Queries - October 22, 1904
      • The Fery Pyrometric Telescope
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