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Patents > IPCs : IPC B64C17/00 or IPC B64C31/06 & Number of text pages: 2-3

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stability (215) · Airplane (154) · automatic stability (94) · Design (58) · aerodynamics (41) · control (41) · Frame (40) · None (37) · kite (31) · wings (31) · Equilibrium (30) · construction (25) · subsystem (21) · rudder (17) · pendulum (14) · aeroplane (13) · balance (12) · aileron (11) · wing warping (11)
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None (197) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent FR-1910-415470 (3) · Patent FR-1912-442419 (3) · Patent DE-1911-11-16 Otto Albin Budig (3)
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None (67) · Armengaud jeune (22) · None (17) · E. Blétry (12) · J. Bonnet-Thirion (8) · Charles Dony (8) · Weismann et Marx (7) · P. Follin (6) · Haseltine, Lake & Co. (6) · Herbert Haddan & Co. (6) · Lavoix et Mosès (6) · J. Fayollet (5) · Abel & Imray‎ (5) · J. Germain (5) · Hippolyte Josse (4) · C. Blétry (4) · H. Boettcher fils (4) · Boult, Wade & Tennant (4)
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