Drilldown: Patents

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Patents > IPCs: IPC B64C27/04 & Number of claims: 3-40

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None (2) · Alexis Beurrier (2) · Édouard-Jean Bigourdan (2)
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None (2) · Alexis Beurrier (2) · Édouard-Jean Bigourdan (2)
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Tech fields:
helicopter (20) · propulsion (11) · airplane (9) · None (7) · hybrid (7) · propellers (5) · Lift (5) · ascension (5) · propeller (4) · sustentation (3) · design (3) · stability (3) · HTA (3)
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