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Patents > IPCs : IPC B64C23/00 or IPC B64C39/00 & Number of claims: 2-5

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Tech fields:
airplane (116) · Design (69) · None (58) · propulsion (47) · frame (46) · construction (42) · wings (38) · propellers (38) · stability (34) · aerodynamics (28) · control (28) · lift (26) · sustentation (26) · whole (23) · chassis (17) · hybrid (16) · helicopter (16) · ascension (14) · HTA (14)
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Supplementary to patent:
None (187) · Patent FR-1909-410140 (4) · Patent US-1911-994106 (2) · Patent FR-1909-403418 (2) · Patent FR-1916-502839 (2) · Patent FR-1908-394254 (2) · Patent DE-1910-06-18 Carl Hanschke (2) · Patent DE-1909-220044 (2) · Patent FR-1910-421136 (2)
Related to aircraft:
Patent agent:
None (38) · Armengaud jeune (17) · Marks & Clerk (11) · None (10) · Brandon frères (8) · J. Bonnet-Thirion (7) · Boult, Wade & Tennant (7) · E. Blétry (6) · J. Germain (6) · Société A. Frey et de Carsalade (5) · Herbert Haddan & Co. (5) · Munn & Co. (5) · Paul Caquet (4) · Charles Dony (4) · Haseltine, Lake & Co. (4) · Dupont et Elluin (4)
National tech categories:
FR 6.4 (140) · None (105) · USPC 244/70 (6) · DE 77 (4) · USPC 244/13 (4) · DE 77h.11 (3) · DE 77h.5 (3) · USPC 244/27 (3) · USPC 244/45R (2) · USPC 244/87 (2) · DE 77h.8 (2) · USPC 244/6 (2) · USPC 416/113 (2) · USPC 244/903 (2) · USPC 244/9 (2)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (124) · CPC B64C2700/6295 (117) · CPC B64C23/005 (73) · CPC B64C2700/6274 (52) · CPC B64C39/005 (28) · CPC B64C39/08 (19) · CPC B64C39/008 (16) · CPC B64C39/003 (9) · CPC B64C39/006 (5) · CPC B64C2700/6271 (4) · CPC B64C39/062 (3) · CPC B64C2700/6273 (3)
First filing:
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