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Patents > IPCs : IPC B64C17/00 or IPC B64C23/00 & Number of claims: 2-5

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None (270) · Seine (6) · Nièvre (3) · Nord (3) · Maine-et-Loire (2) · Seine-et-Oise (2) · England (2)
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Tech fields:
stability (158) · airplane (141) · automatic stability (67) · None (61) · control (45) · design (43) · Frame (34) · construction (23) · aerodynamics (22) · subsystem (21) · propellers (20) · equilibrium (20) · propulsion (20) · hybrid (17) · wings (16) · rudder (15) · balance (15) · Steering (14) · lift (13)
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None (195) · Patent FR-1909-410140 (4) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent US-1915-1149680 (2) · Patent FR-1908-396249 (2) · Patent FR-1912-442419 (2) · Patent IT-1910-10-17 Carlo Navaro (2) · Patent DE-1909-220044 (2) · Patent BE-1912-08-13-Panian (2) · Patent FR-1910-415470 (2) · Patent BE-1911-05-15 Georges de Bothezat (2) · Patent FR-1909-408872 (2) · Patent DE-1910-243485 (2) · Patent HU-1909-49726 (2) · Patent DE-1911-11-16 Otto Albin Budig (2) · Patent DE-1910-06-18 Carl Hanschke (2)
Related to aircraft:
Patent agent:
None (33) · Armengaud jeune (16) · None (13) · E. Blétry (9) · Marks & Clerk (9) · Herbert Haddan & Co. (8) · Charles Dony (8) · Schwab (8) · Rigot et Prévost (7) · J. Germain (6) · L. Chassevent (6) · Société A. Frey et de Carsalade (6) · Matray frères et Cie (6) · Paul Coulomb (5) · Boult, Wade & Tennant (5) · Brandon frères (5) · Haseltine, Lake & Co. (5)
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