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Patents > Grant date: 1900 - 1999 & IPCs: IPC B64C27/04 & Number of text pages: 3-11

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Office:
Inventors:
Alexis Beurrier (5) · Édouard-Jean Bigourdan (5) · Louis Lacoin (3) · None (2) · Jesse James Dillon (2)
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Applicant person:
Alexis Beurrier (5) · None (3) · Louis Lacoin (3) · Édouard-Jean Bigourdan (3) · Jesse James Dillon (2)
Applicant type:
Applicant is inventor:
Tech fields:
helicopter (28) · airplane (12) · Propellers (11) · hybrid (11) · Propulsion (10) · ascension (9) · None (7) · design (7) · heavier-than-air (6) · propeller (5) · frame (4) · wheels (4) · stability (4) · sustentation (3) · lift (3) · HTA (3) · wings (3) · descent (3) · control (3)
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Related to aircraft:
Patent agent:
None (8) · J. S. Withers & Spooner (3) · None (3) · Marks & Clerk (3) · Armengaud jeune (2) · Brandon frères (2) · Browne & Co. (2) · J. Fayollet (2)
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