Drilldown: Patents

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Patents > Grant date: 1900 - 1999 & Publication date: 1900 - 1999 & CPCs: CPC B64C2700/6281 & Citations from after 1930: None

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Office:
Inventors:
Edmond-Louis Douhéret (3) · Désiré Sival (3) · Charles Wolf (2) · Edwin Richard Mumford (2)
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Applicant person:
Edmond-Louis Douhéret (3) · Désiré Sival (3) · None (2) · Charles Wolf (2) · Edwin Richard Mumford (2)
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Tech fields:
helicopter (25) · propulsion (11) · airplane (10) · propellers (10) · design (9) · hybrid (9) · ascension (7) · wings (4) · heavier-than-air (4) · sustentation (4) · frame (4) · wheels (3) · lift (3) · helicoplane (3) · None (3) · construction (3) · control (3)
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Showing below up to 44 results in range #1 to #44.

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