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Patents > National tech categories: FR 6.4 & IPCs : IPC B64C33/02 or IPC B64C39/00

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Airplane (125) · Design (94) · wings (57) · frame (56) · construction (48) · Propulsion (48) · None (46) · propellers (43) · stability (37) · Aerodynamics (35) · lift (30) · Control (28) · flapping (26) · sustentation (25) · aeroplane (23) · whole (21) · Rudder (18) · hybrid (17) · steering (17)
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None (201) · Patent FR-1912-446040 (4) · Patent FR-1911-429078 (2) · Patent FR-1913-461629 (2) · Patent FR-1912-461530 (2) · Patent FR-1912-441089 (2) · Patent FR-1908-394418 (2) · Patent FR-1908-396470 (2) · Patent FR-1910-414004 (2) · Patent FR-1909-403418 (2)
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None (59) · Armengaud jeune (24) · None (23) · J. Germain (12) · J. Bonnet-Thirion (10) · E. Bletry (10) · C. Blétry (8) · Weismann et Marx (7) · Dupont et Elluin (7) · Boramé et Julien (7) · L. Chassevent (6) · Chassevent (6) · Charles Assi (6) · Y. Rabilloud et fils (6) · G. de Mestral et F. Harle (5) · Schwab (5) · Brandon freres (5)
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