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Patents > Supplementary to patent: None & IPCs : IPC B64C1/30 or IPC B64C17/00

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Tech fields:
stability (143) · None (139) · airplane (85) · automatic stability (45) · Control (23) · design (19) · frame (15) · equilibrium (15) · aerodynamics (11) · pendulum (11) · balance (10) · wings (10) · propellers (7) · landing (7) · airfoil (7) · construction (7) · rudder (7) · wheels (6) · Subsystem (6)
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None (60) · None (33) · Armengaud jeune (14) · E. Blétry (8) · Lavoix et Mosès (8) · Charles Dony (8) · J. Bonnet-Thirion (7) · Schwab (6) · Hippolyte Josse (6) · J. Germain (5) · P. Follin (5) · Paul Coulomb (5) · L. Chassevent (4) · Marks & Clerk (4) · Société A. Frey et de Carsalade (4) · Weismann et Marx (4) · Matray freres et Cie (4)
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