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Patents > Inventor country: CH & National tech categories : FR 6.4 or GB 4 without buoyant

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LTA (10) · frame (8) · None (7) · construction (7) · airplane (7) · Design (5) · rudder (4) · propellers (4) · navigation (4) · propulsion (4) · rigid (3) · steering (3) · control (3) · subsystem (3) · wings (3)
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