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      Digital & 4-Year Archive

      Scientific American November 02, 1912

      Inventions New and Interesting - November 2, 1912

      Simple Patent Law; Patent Office News; Notes on Trademarks

      • November 2, 1912

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      More in the November 02, 1912 issue of Scientific American
      • Panama Exposition Postage Stamps, Notice
      • Mortar Fire
      • Recently Patented Inventions - November 2, 1912
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