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Patents > IPCs : IPC B64C17/00 or IPC H02K21/42 & Cites these patents : 1887 or None

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Tech fields:
stability (353) · Airplane (282) · automatic stability (165) · design (83) · control (80) · aerodynamics (65) · None (61) · equilibrium (53) · wings (47) · frame (45) · Subsystem (42) · pendulum (31) · construction (29) · rudder (27) · Lift (24) · Steering (19) · balance (17) · LTA (16) · propellers (15)
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None (315) · Patent FR-1908-396249 (5) · Patent FR-1906-366080 (4) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent GB-1909-8531 (3) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent FR-1910-415470 (3) · Patent FR-1912-442419 (3)
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None (97) · None (32) · Armengaud jeune (29) · E. Blétry (15) · Marks & Clerk (13) · Charles Dony (11) · J. Bonnet-Thirion (11) · Matray frères et Cie (10) · J. Germain (9) · P. Follin (8) · Lavoix et Mosès (8) · Abel & Imray (8) · L. Chassevent (7) · Hippolyte Josse (7) · Schwab (7) · Haseltine, Lake & Co. (7) · Herbert Haddan & Co. (6) · J. Fayollet (6) · Brandon frères (6)
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