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      Digital & 4-Year Archive

      Scientific American November 30, 1912

      Every Man to his Trade, The "Bath-tub" Decision and the Patent Law and more

      • November 30, 1912

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      More in the November 30, 1912 issue of Scientific American
      • Asphalt Still a Mysterious Material
      • Public Support of the Aeroplane Fleet in France
      • The Motor Truck's Span of Life, Motor Track Queries and Answers
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