Drilldown: Patents

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Patents > Inventor country : CH or PT & National tech categories: FR 6.4

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airplane (9) · LTA (9) · frame (8) · design (7) · construction (7) · rudder (6) · None (5) · control (5) · propellers (5) · navigation (4) · propulsion (3) · rigid (3) · steering (3) · subsystem (3) · wings (3)
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