Drilldown: Patents

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Patents > Office : AT or BE or NO & Supplementary to patent : Patent BE-1909-214032 or Patent BE-1911-240352 or Patent FR-1911-430455 or Patent GB-1909-12556 or None & Patent agent : A. Wunderlich & Cie, Ingénieurs-Conseils or De Visscher et Graetz or None

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airplane (42) · propellers (38) · hybrid (32) · LTA (30) · design (6) · wings (4) · ascension (4) · propulsion (4) · sustentation (3) · stability (2) · rarefaction (2) · lift (2) · helicopter (2) · frame (2) · aerodynamics (2) · construction (2)
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Showing below up to 52 results in range #1 to #52.

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