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Patents > National tech categories : FR 6.4 or GB 4 without buoyant & IPCs: IPC B64C39/00

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None (150) · Airplane (71) · design (39) · Frame (32) · wings (22) · propellers (21) · construction (20) · propulsion (17) · stability (17) · lift (17) · whole (16) · control (11) · sustentation (11) · aerodynamics (11) · Rudder (10) · navigation (9) · fuselage (9) · chassis (9) · hybrid (7) · heavier-than-air (7)
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None (169) · Patent FR-1908-396470 (2) · Patent FR-1909-403418 (2) · Patent FR-1913-461629 (2) · Patent FR-1908-394418 (2) · Patent FR-1912-441089 (2) · Patent FR-1910-414004 (2)
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None (39) · None (24) · Armengaud jeune (22) · J. Bonnet-Thirion (12) · J. Germain (10) · Y. Rabilloud et fils (8) · E. Bletry (8) · Boramé et Julien (8) · Weismann et Marx (7) · Dupont et Elluin (6) · Brandon frères (6) · L. Chassevent (6) · C. Blétry (5) · Ch. Mardelet (5) · G. Petiau (5) · G. de Mestral et F. Harlé (5) · Charles Assi (5)
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