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Patents > Office : BE or CA & Number of figures: 12-40

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frame (6) · Airplane (6) · propulsion (4) · stability (4) · LTA (3) · navigation (3) · propeller (3) · Propellers (3) · compartments (3) · kite (2) · helicopter (2) · design (2) · wings (2) · rudder (2) · car (2) · construction (2)
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