Drilldown: Patents

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Patents > Year filed: 1900 - 1909 & Inventor country: BE & Related to aircraft: Yes

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airplane (38) · propellers (32) · LTA (28) · hybrid (28) · Propulsion (12) · design (8) · rarefaction (7) · helicopter (6) · sustentation (5) · aerodynamics (4) · Ascension (4) · frame (3) · stability (3) · equilibrium (3)
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Showing below up to 59 results in range #1 to #59.

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