Drilldown: Patents

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Patents > Inventor country : BE or ES & Filing date: 1900 - 1909 & Related to aircraft: Yes

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Airplane (24) · LTA (18) · propellers (18) · Propulsion (14) · hybrid (14) · design (11) · rarefaction (7) · Helicopter (6) · sustentation (6) · stability (5) · Ascension (5) · aerodynamics (5) · frame (5) · subsystem (4) · balloons (4) · landing (3) · equilibrium (3) · navigation (3)
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Showing below up to 53 results in range #1 to #53.

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