Drilldown: Patents

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Patents > Year filed: 1910 - 1919 & IPCs : IPC B64C27/04 or IPC B64D7/04

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Office:
Inventors:
Alexis Beurrier (5) · Édouard-Jean Bigourdan (5) · None (3) · Louis Lacoin (3) · Edmond-Louis Douhéret (3) · Jesse James Dillon (2)
Inventor country:
Applicant person:
Alexis Beurrier (5) · Edmond-Louis Douhéret (3) · Louis Lacoin (3) · Édouard-Jean Bigourdan (3) · None (2) · Jesse James Dillon (2)
Applicant type:
Applicant is inventor:
Tech fields:
helicopter (25) · hybrid (12) · propulsion (9) · propellers (9) · design (8) · None (8) · ascension (8) · airplane (8) · heavier-than-air (5) · Construction (4) · Frame (4) · propeller (3) · gyroscope (3) · control (3) · Helicoplane (3) · sustentation (3) · lift (3) · stability (3)
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Application number:
None (2)
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Citations from after 1930:
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