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Patents > Office : CA or DE or FI or IN or IT & Inventor country : AU or NL or NO or US & Granted: Yes & Number of text pages: 9-14

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Airplane (7) · LTA (6) · rudder (4) · propulsion (4) · lift (3) · airfoil (3) · airship (3) · steering (3) · control (3) · Design (3) · propeller (3) · navigation (3) · sustentation (2) · safety (2) · Propellers (2) · military (2) · wings (2) · frame (2) · balloon (2)
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