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Patents > IPCs: IPC B64C27/04 & Cites these patents : 1910 or Patent AT-1909-47911 or USPC 244/87 or None & Number of diagram pages: 1-2

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Inventors:
Désiré Sival (3) · Édouard-Jean Bigourdan (3) · Alexis Beurrier (3) · Edmond-Louis Douhéret (3) · Charles Wolf (2) · Félix Monin (2) · Jules Collomb (2) · Louis Lacoin (2) · None (2)
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Applicant person:
Edmond-Louis Douhéret (3) · Désiré Sival (3) · Alexis Beurrier (3) · None (2) · Louis Lacoin (2) · Jules Collomb (2) · Charles Wolf (2) · Félix Monin (2)
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Tech fields:
Helicopter (37) · propellers (18) · hybrid (17) · propulsion (16) · Airplane (15) · ascension (13) · None (9) · Design (9) · Lift (6) · heavier-than-air (6) · sustentation (5) · frame (5) · wings (5) · descent (4) · control (4) · construction (4) · propeller (4)
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None (2)
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