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Patents > Office : DE or Other & National tech categories: FR 6.4 & IPCs: IPC B64C27/04

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Office: (Click arrow to add another value)
Inventors:
Edmond-Louis Douhéret (3) · Désiré Sival (3) · Édouard-Jean Bigourdan (2) · Edwin Richard Mumford (2) · Émile Dupont (2) · Jules Cornu (2) · Paul Cornu (2) · Charles Wolf (2) · Jules Collomb (2) · Alexis Beurrier (2)
Inventor country:
Applicant person:
Désiré Sival (3) · Edmond-Louis Douhéret (3) · Charles Wolf (2) · Alexis Beurrier (2) · Jules Collomb (2) · Émile Dupont (2) · Jules Cornu (2) · Edwin Richard Mumford (2)
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Tech fields:
helicopter (30) · propulsion (13) · propellers (13) · Airplane (11) · Ascension (11) · hybrid (10) · None (7) · design (7) · sustentation (5) · lift (5) · Wings (5) · heavier-than-air (4) · descent (3) · helicoplane (3) · Frame (3)
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Citations from after 1930:
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Showing below up to 58 results in range #1 to #58.

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