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Patents > Year filed: 1912 & Office : BE or DEG or DK

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Airplane (19) · design (7) · wings (6) · stability (6) · propulsion (5) · propellers (5) · aerodynamics (5) · landing (4) · hybrid (4) · navigation (4) · control (4) · takeoff (4) · hydroplane (4) · chassis (3) · construction (3) · LTA (3) · Lift (3) · steering (3) · Frame (3) · hydrodynamics (3)
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Showing below up to 34 results in range #1 to #34.

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