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      Scientific American May 1928

      Radio Patents Before Marconi, Light-socket Aerials and more

      A Monthly Review of the Progress Made In All Branches of Radio Communication

      • May 1, 1928

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      More in the May 1928 issue of Scientific American
      • Camper's Knife, Eye-Comfort Cards and more
      • Making Fiber Board from Wood Chips, An Electric Bug House and more
      • One-piece Automobile Bodies
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