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Patents > Office : BE or Other & CPCs : CPC B22D33/00 or CPC B64B1/40 & Number of text pages: 3-8

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LTA (23) · balloon (17) · stability (9) · navigation (6) · design (6) · captive (6) · kite (5) · frame (5) · airship (4) · gas (4) · car (4) · safety (4) · parachute (3) · construction (3) · None (3) · rudder (3) · airfoil (3)
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