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Patents > CPCs : CPC B64B1/40 or CPC B64C11/006 & Number of diagram pages: 3-5

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LTA (10) · propulsion (8) · balloon (6) · navigation (5) · Propeller (4) · stability (3) · paddle-wheel (3) · frame (3) · propellers (3) · None (3) · airfoil (3) · airship (3) · rudder (3) · captive (2) · construction (2) · windmill (2) · ascension (2) · airplane (2) · kite (2)
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