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Patents > Office: DE & CPCs : CPC B64B1/40 or CPC B64C2700/6235 or CPC B64C2700/6295 or CPC B64C39/005 & Number of text pages: 2

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frame (11) · airplane (9) · construction (9) · LTA (6) · biplane (6) · design (5) · wings (4) · fuselage (4) · balloon (3) · suspension (2) · motors (2) · propulsion (2) · cables (2) · steering (2)
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