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Patents > Grant date: 1900 - 1999 & Publication date: 1900 - 1999 & IPCs: IPC B64C27/04 & Citations from after 1930: None

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Office:
Inventors:
Edmond-Louis Douhéret (3) · Désiré Sival (3) · Edwin Richard Mumford (2) · Émile Dupont (2) · Félix Monin (2) · Paul Cornu (2) · Jules Cornu (2) · Charles Wolf (2) · Édouard-Jean Bigourdan (2) · Alexis Beurrier (2)
Inventor country:
Applicant person:
Désiré Sival (3) · Edmond-Louis Douhéret (3) · Edwin Richard Mumford (2) · Alexis Beurrier (2) · Charles Wolf (2) · Jules Cornu (2) · Félix Monin (2) · Émile Dupont (2)
Applicant type:
Applicant is inventor:
Tech fields:
helicopter (26) · propulsion (15) · Airplane (15) · propellers (15) · hybrid (13) · ascension (10) · Design (10) · heavier-than-air (6) · wings (5) · Frame (5) · sustentation (5) · Lift (5) · wheels (4) · None (4) · parachutes (3) · Construction (3) · propeller (3) · Helicoplane (3) · control (3)
Full specification filed date:
Application number:
None (2)
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Related to aircraft:
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Cites these patents:
Citations from after 1930:
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