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Patents > Applicant firm: None & IPCs : IPC B64C17/00 or IPC E21C25/16

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Tech fields:
stability (348) · airplane (276) · automatic stability (165) · design (84) · control (77) · aerodynamics (65) · None (58) · Equilibrium (55) · Wings (47) · frame (45) · subsystem (41) · pendulum (30) · Construction (30) · rudder (28) · lift (24) · steering (19) · propellers (16) · balance (16)
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None (305) · Patent FR-1908-396249 (5) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent FR-1910-415470 (3) · Patent FR-1912-442419 (3) · Patent GB-1909-8531‎ (3) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent DE-1911-11-16 Otto Albin Budig (3)
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Patent agent:
None (96) · None (32) · Armengaud jeune (24) · E. Blétry (15) · Marks & Clerk (13) · Charles Dony (11) · J. Bonnet-Thirion (10) · Matray frères et Cie (10) · J. Germain (9) · Lavoix et Moses (8) · P. Follin (8) · Abel & Imray (8) · Haseltine, Lake & Co. (8) · Herbert Haddan & Co. (7) · Hippolyte Josse (7) · Schwab (7) · Paul Coulomb (6) · J. Fayollet (6)
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