{
  "abstract": "A lifting apparatus includes an air supply conduit having an air supply end and a first air discharge end, a first blade in fluid communication with the first air discharge end, and a perforated diaphragm configured to allow air flow through the diaphragm and the blade. The diaphragm and the first blade assembly form a cavity configured to receive air from the first discharge end and discharge the air from the perforated diaphragm.",
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  "title": "Hover blade lifting system",
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