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Patents > National tech categories : BE K or DE 77h or FR 6.4 & IPCs: IPC B64C17/00

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Tech fields:
stability (236) · airplane (192) · automatic stability (122) · design (68) · control (58) · aerodynamics (56) · wings (36) · Equilibrium (36) · Subsystem (31) · None (30) · Frame (28) · construction (22) · rudder (19) · lift (18) · pendulum (17) · Steering (14) · sustentation (13) · aeroplane (13) · aileron (13) · cables (12)
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Supplementary to patent:
None (207) · Patent FR-1908-396249 (4) · Patent DE-1911-11-16 Otto Albin Budig (3) · Patent FR-1909-408872 (2) · Patent IT-1910-10-17 Carlo Navaro (2) · Patent FR-1912-450608 (2) · Patent FR-1912-442419 (2) · Patent FR-1910-423998 (2) · Patent IT-1911-06-13 Guido Castagneris (2) · Patent DE-1910-04-04 August Wendtland (2)
Related to aircraft:
Patent agent:
None (61) · Armengaud jeune (24) · None (23) · E. Blétry (15) · Charles Dony (11) · J. Bonnet-Thirion (10) · Matray frères et Cie (9) · J. Germain (8) · Lavoix et Mosès (8) · P. Follin (7) · L. Chassevent (7) · Hippolyte Josse (6) · Paul Coulomb (6) · J. Fayollet (6) · C. Baumann (5) · Boramé et Julien (5)
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