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Patents > Inventor country : CA or CH & Number of diagram pages: 2

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propulsion (10) · navigation (10) · LTA (9) · frame (9) · airplane (9) · propeller (6) · None (5) · design (5) · balloon (5) · marine (4) · control (4) · stability (4) · rudder (3) · parachute (2) · dirigible (2) · subsystem (2) · flying machine (2) · takeoff (2) · hybrid (2)
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