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Patents > Supplementary to patent : Patent FR-1908-389993 or None & IPCs: IPC B64C27/04

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Inventors:
None (3) · Paul Cornu (3) · Jules Cornu (3) · Félix Monin (2) · Désiré Sival (2) · Édouard-Jean Bigourdan (2) · Alexis Beurrier (2)
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Applicant person:
Jules Cornu (3) · None (2) · Alexis Beurrier (2) · Félix Monin (2) · Paul Cornu (2) · Désiré Sival (2)
Applicant is inventor:
Tech fields:
None (28) · helicopter (26) · propulsion (10) · propellers (7) · airplane (5) · ascension (5) · hybrid (5) · HTA (4) · propeller (3) · wheels (3) · design (3) · stability (3) · Lift (3)
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None (2)
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Supplementary to patent: (Click arrow to add another value)
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Citations from after 1930:
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