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Patents > IPCs : IPC B64C17/00 or IPC B64C27/04 & Number of claims: 1-2

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stability (192) · airplane (164) · automatic stability (94) · design (58) · Control (51) · aerodynamics (41) · None (36) · Wings (33) · helicopter (27) · frame (26) · Equilibrium (26) · propellers (21) · Subsystem (20) · construction (19) · Lift (16) · pendulum (14) · rudder (13) · steering (12) · propulsion (12) · Hybrid (12)
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None (198) · Patent FR-1908-396249 (4) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent CH-1910-52816 (2) · Patent FR-1911-446282 (2) · Patent FR-1909-401348 (2) · Patent FR-1910-423998 (2) · Patent NZ-1909-25865 (2) · Patent US-1911-1011761 (2) · Patent FR-1909-399456 (2) · Patent US-1910-999125 (2) · Patent IT-1911-06-13 Guido Castagneris (2) · Patent FR-1914-476300‎‎ (2) · Patent DK-1913-19885 (2) · Patent CH-1911-55140 (2) · Patent FR-1915-478440 (2)
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None (57) · None (31) · J. Germain (12) · Armengaud jeune (9) · Matray frères et Cie (9) · Lavoix et Mosès (9) · J. Fayollet (8) · P. Follin (7) · E. Blétry (7) · J. Bonnet-Thirion (6) · Hippolyte Josse (6) · Y. Rabilloud et fils (6) · Brandon frères (6) · G. Petiau (5)
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