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      Scientific American December 07, 1912

      Inventions New and Interesting - December 7, 1912

      Simple Patent Law; Patent Office News; Notes on Trademarks

      • December 7, 1912

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      More in the December 07, 1912 issue of Scientific American
      • How Electricity Makes the Dairy Cleaner
      • Some Novelties in Glider Contruction, The Function of a University
      • Street Paving with a Motor Truck
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