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Patents > IPCs : IPC B64C17/00 or IPC B64C27/04 & Number of text pages: 3-9

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stability (149) · None (130) · airplane (115) · automatic stability (48) · control (40) · design (25) · helicopter (23) · frame (22) · equilibrium (22) · Subsystem (21) · aerodynamics (16) · steering (15) · wings (15) · pendulum (14) · rudder (13) · propellers (12) · lift (12) · balance (10) · construction (10)
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None (225) · Patent FR-1908-396249 (5) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent DE-1911-11-16 Otto Albin Budig (3)
Related to aircraft:
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None (52) · Armengaud jeune (20) · Marks & Clerk (18) · None (15) · E. Blétry (11) · L. Chassevent (8) · Matray frères et Cie (8) · J. Bonnet-Thirion (7) · Lavoix et Mosès (7) · Herbert Haddan & Co. (6) · Brandon frères (5) · Dom. Casalonga (5) · J. S. Withers & Spooner (5) · Lewis William Goold (5) · Société A. Frey et de Carsalade (5) · Schwab (5)
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