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      Knowledge is Power

      Scientific American August 27, 1870

      Sternberg's Electro-Magnetic Regulator for Dampers and Valves, Hirn's Telodynamic Cable, and more

      • August 27, 1870

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      More in the August 27, 1870 issue of Scientific American
      • Death of Professor Palmstedt
      • Official List of Patents- August 27, 1870
      • The Use of Torpedoes for Coast Defense
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