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Patents > Year granted: 1910 - 1919 & Office : BE or DK or NL & Inventor country: BE

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airplane (29) · propellers (19) · hybrid (13) · LTA (11) · propulsion (7) · design (5) · wings (4) · stability (4) · construction (4) · instrument (4) · winglets (2) · parachute (2) · motors (2) · lift (2) · aerodynamics (2) · landing (2) · frame (2) · equilibrium (2) · dirigible (2) · control (2)
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Showing below up to 44 results in range #1 to #44.

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