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Patents > Inventor country: CH & First filing: No & Number of text pages: 2-9

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frame (13) · airplane (11) · subsystem (9) · construction (9) · None (7) · LTA (7) · design (6) · navigation (6) · propeller (6) · propulsion (5) · control (5) · steering (5) · elasticity (4) · stability (4) · cables (3) · propellers (3) · wings (3)
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