Drilldown: Patents

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Patents > IPCs: None & Number of text pages: 2-3 & Number of figures: 12

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frame (8) · LTA (7) · propeller (6) · airplane (5) · propulsion (5) · stability (5) · navigation (4) · wings (3) · hybrid (3) · helicopter (3) · flapping (3) · airship (3) · design (3) · balloon (2) · human-powered (2) · automatic stability (2) · whole (2) · airfoil (2) · metal (2)
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