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Patents > National tech categories: FR 6.4 & First filing: No & Number of text pages: 1-2

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Tech fields:
airplane (335) · design (191) · Frame (147) · Stability (112) · construction (103) · LTA (103) · propellers (102) · wings (102) · aerodynamics (87) · propulsion (74) · lift (61) · subsystem (56) · control (52) · Sustentation (47) · landing (47) · Fuselage (42) · hybrid (41) · chassis (38) · wheels (36) · automatic stability (36)
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Patent agent:
Armengaud jeune (92) · None (86) · J. Bonnet-Thirion (28) · None (22) · E. Blétry (20) · Charles Dony (20) · J. Germain (19) · L. Chassevent (15) · Hippolyte Josse (15) · Brandon frères (14) · Lavoix et Mosès (13) · G. de Mestral et F. Harlé (12) · Boramé et Julien (12) · Dupont et Elluin (11) · Schwab (10) · C. Baumann (9) · de Bongé (9) · Dom. Casalonga (9) · H. Bœttcher fils (8)
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IPCs:
IPC B64C39/00 (60) · IPC B64C17/00 (59) · IPC B64C1/00 (48) · IPC B64B1/00 (38) · IPC B64B1/58 (34) · IPC B64C35/00 (30) · IPC B64C11/00 (28) · IPC B64C3/00 (24) · IPC B64C25/00 (22) · IPC B64C23/00 (21) · None (19) · IPC B64C3/38 (18) · IPC B64C33/02 (17) · IPC B64B1/40 (14) · IPC B64D17/00 (10) · IPC B64C3/52 (10) · IPC B64C3/54 (10) · IPC B64C11/20 (10) · IPC B64C27/04 (9) · IPC B64C13/00 (9)
CPCs:
CPC B64C17/00 (62) · CPC B64C39/00 (53) · CPC B64C2700/6295 (44) · CPC B64B1/00 (39) · CPC B64B1/58 (34) · CPC B64C3/00 (25) · CPC B64C2700/6218 (24) · CPC B64C23/005 (20) · CPC B64C35/00 (19) · CPC B64C33/02 (19) · CPC B64C11/006 (18) · CPC B64C3/385 (17) · CPC B64C2700/6274 (17) · CPC B64C25/06 (16) · CPC B64B1/40 (14) · CPC B64C25/62 (13) · CPC B64F2700/6226 (12) · CPC B64C13/00 (12) · CPC B64C2700/6235 (11)
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