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Patents > National tech categories : FR 6.4 or USPC 102/400 & Number of claims: 2

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Tech fields:
airplane (151) · stability (79) · design (71) · frame (59) · propellers (53) · construction (49) · None (48) · Propulsion (47) · LTA (46) · wings (38) · control (36) · aerodynamics (28) · navigation (24) · automatic stability (24) · sustentation (23) · Subsystem (23) · lift (19) · fuselage (18) · steering (17)
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Supplementary to patent:
None (220) · Patent FR-1907-373818 (3) · Patent FR-1908-392672 (3) · Patent FR-1910-414695 (2) · Patent FR-1909-410140 (2) · Patent FR-1908-396249 (2) · Patent FR-1917-504302 (2) · Patent FR-1911-430799 (2)
Related to aircraft:
Patent agent:
Armengaud jeune (52) · Brandon frères (29) · None (22) · Charles Dony (15) · Hippolyte Josse (14) · L. Chassevent (12) · J. Germain (12) · Lavoix et Mosès (11) · E. Blétry (11) · Schwab (11) · J. Bonnet-Thirion (11) · None (10) · Dupont et Elluin (8) · H. Boettcher fils (7) · Boramé et Julien (7) · Rigot et Prévost (6) · Société A. Frey et de Carsalade (6) · Emile Bert (6) · Matray frères et Cie (6)
National tech categories: (Click arrow to add another value)
IPCs:
IPC B64C17/00 (55) · IPC B64C1/00 (44) · IPC B64C39/00 (30) · IPC B64C23/00 (22) · IPC B64B1/00 (22) · IPC B64C33/02 (13) · IPC B64C11/00 (13) · IPC B64C3/38 (11) · IPC B64C3/54 (11) · IPC B64B1/58 (10) · IPC B64D17/00 (10) · IPC B64C35/00 (10) · IPC B64C25/00 (10) · IPC B64C3/00 (9) · IPC B64C27/04 (8) · None (7) · IPC B64C13/00 (6) · IPC B64C3/18 (5) · IPC B64C11/20 (5) · IPC B64C13/04 (5)
CPCs:
CPC B64C17/00 (56) · CPC B64C39/00 (25) · CPC B64C23/005 (22) · CPC B64B1/00 (22) · CPC B64C2700/6295 (21) · CPC B64C2700/6218 (19) · CPC B64C2700/6274 (18) · CPC B64C2700/6212 (18) · CPC B64C33/02 (15) · CPC B64C13/00 (12) · CPC B64C1/00 (11) · CPC B64B1/58 (11) · CPC B64C3/385 (10) · CPC B64C35/00 (9) · CPC B64C3/00 (9) · CPC B64C2700/6228 (9) · CPC B64C11/006 (8) · CPC B64D17/00 (8)
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