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Patents > IPCs : IPC B60F5/02 or IPC B64C27/04 & Citations from after 1930: None

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Office:
Inventors:
Édouard-Jean Bigourdan (4) · Alexis Beurrier (4) · None (3) · Désiré Sival (3) · Jules Cornu (3) · Paul Cornu (3) · Edmond-Louis Douhéret (3) · Louis Lacoin (2) · Félix Monin (2) · Émile Dupont (2) · Edwin Richard Mumford (2) · Charles Wolf (2)
Inventor country:
Applicant person:
None (4) · Alexis Beurrier (4) · Jules Cornu (3) · Edmond-Louis Douhéret (3) · Désiré Sival (3) · Louis Lacoin (2) · Paul Cornu (2) · Edwin Richard Mumford (2) · Charles Wolf (2) · Édouard-Jean Bigourdan (2) · Émile Dupont (2) · Félix Monin (2)
Applicant is inventor:
Tech fields:
helicopter (35) · Propulsion (20) · Airplane (19) · propellers (18) · hybrid (17) · design (11) · Ascension (11) · None (8) · lift (7) · heavier-than-air (7) · frame (6) · wings (6) · sustentation (5) · wheels (5) · construction (4) · control (4) · propeller (4)
Full specification filed date:
Application number:
None (5)
Granted:
Related to aircraft:
National tech categories:
IPCs: (Click arrow to add another value)
First filing:
Citations from after 1930:
Number of text pages:
Number of diagram pages:

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