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Patents > CPCs : CPC B64B1/40 or CPC B64C13/30 & Number of claims: 4-20

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LTA (22) · balloon (14) · None (7) · stability (7) · safety (6) · frame (5) · rudder (5) · kite (4) · design (4) · navigation (4) · balloons (3) · parachute (3) · car (3) · gas (3) · construction (3) · airplane (3) · Airship (3)
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