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Patents > CPCs : CPC B64B1/40 or CPC B64C9/38 & Number of figures: 1-2

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LTA (28) · balloon (17) · frame (7) · Airship (5) · stability (5) · safety (4) · None (3) · kite (3) · Suspension (3) · navigation (3) · military (2) · fun (2) · propeller (2) · Design (2) · descent (2) · propulsion (2) · construction (2) · rudder (2) · balloons (2) · aerostat (2)
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