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Patents > IPCs: None & Number of text pages: 9-30 & Number of claims: 9-14

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frame (7) · airplane (7) · stability (5) · propulsion (4) · LTA (4) · car (4) · navigation (3) · marine (3) · construction (3) · propeller (3) · design (3) · propellers (3) · kite (2) · biplane (2) · cargo (2) · compartments (2) · control (2)
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