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Patents > IPCs : IPC B64C23/00 or IPC B64C31/06 or IPC B64D7/00

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None (233) · Seine (13) · England (4) · Yorkshire (4) · London (3) · Nord (3) · Aisne (3) · Maine-et-Loire (2) · Harrogate (2) · Indiana (2) · Paris (2) · Seine-et-Oise (2) · California (2) · Villers-Cotterêts (2) · Gironde (2)
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Tech fields:
None (75) · Airplane (71) · kite (60) · hybrid (38) · frame (37) · propulsion (36) · design (33) · propellers (28) · helicopter (26) · stability (25) · lift (24) · wings (21) · Ascension (21) · construction (18) · aerodynamics (17) · navigation (15) · control (15) · sustentation (14) · propeller (13) · whole (13)
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Supplementary to patent:
None (229) · Patent FR-1909-410140 (5) · Patent DE-1909-220044 (2) · Patent FR-1915-525800 (2) · Patent FR-1909-404954 (2) · Patent FR-1908-407090 (2) · Patent DE-1910-06-18 Carl Hanschke (2) · Patent FR-1909-399976 (2) · Patent AT-1909-40038 (2)
Related to aircraft:
Patent agent:
None (54) · None (30) · Armengaud jeune (10) · J. Bonnet-Thirion (6) · G. de Mestral et F. Harlé (6) · E. Bletry (6) · Schwab (5) · Boult, Wade & Tennant (4) · Borame et Julien (4) · C. Blétry (4) · Chassevent (4) · Paul Caquet (4) · Brandon frères (4) · W. P. Thompson & Co. (4)
IPCs: (Click arrow to add another value)
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