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Patents > IPCs : IPC B64C23/00 or IPC B64C33/02 & Number of text pages: 2-3

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None (226) · Seine (12) · Rhône (3) · Nord (3) · Paris (3) · Meurthe-et-Moselle (2) · Aisne (2) · London (2) · Indiana (2) · Manche (2) · Maine-et-Loire (2) · California (2) · Bouches-du-Rhône (2) · Seine-et-Oise (2)
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None (77) · Airplane (61) · propulsion (47) · flapping (44) · wings (39) · Hybrid (33) · design (31) · ornithopter (26) · propellers (25) · Frame (23) · helicopter (22) · lift (20) · control (18) · LTA (17) · Ascension (17) · construction (15) · Stability (14) · navigation (14) · aerodynamics (14) · sustentation (12)
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None (42)
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None (193) · Patent FR-1912-446040 (4) · Patent FR-1909-410140 (3) · Patent BE-1910-12-28-Muehter (3) · Patent DE-1909-220044 (2) · Patent DE-1910-06-18 Carl Hanschke (2) · Patent FR-1915-525800 (2) · Patent FR-1909-420004 (2) · Patent FR-1908-407090 (2) · Patent AT-1909-40038 (2) · Patent FR-1909-404954 (2)
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None (58) · None (23) · Schwab (8) · J. Germain (7) · G. de Mestral et F. Harlé (7) · E. Bletry (7) · Armengaud jeune (6) · Rigot et Prévost (5) · C. Blétry‎ (5) · Chassevent (5) · W. P. Thompson & Co. (4) · J. Bonnet-Thirion (4) · Borame et Julien (4) · Paul Caquet (4)
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