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Patents > Office : GB or MX or Other or None & Granted : Yes or Other or None & IPCs : IPC B64C23/00 or IPC B64C27/04 & Number of text pages: 4

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Inventors:
None (2) · Édouard-Jean Bigourdan (2) · Alexis Beurrier (2) · Gustav Mees (2)
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Tech fields:
airplane (13) · Propulsion (9) · helicopter (7) · hybrid (7) · navigation (6) · None (5) · stability (5) · propellers (5) · Lift (4) · design (4) · construction (3) · whole (3) · takeoff (3) · propeller (3) · ascension (3) · LTA (3) · frame (3) · gyroscope (3) · sustentation (3)
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