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Patents > Related to aircraft: Yes & National tech categories : FR 6.4 or USPC 244/233 & Number of text pages: 1-2

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Tech fields:
Airplane (385) · design (224) · frame (153) · stability (135) · LTA (122) · wings (119) · Construction (117) · Aerodynamics (112) · Propellers (105) · control (86) · Propulsion (81) · lift (64) · automatic stability (58) · navigation (53) · sustentation (52) · fuselage (48) · rudder (47) · Hybrid (46) · subsystem (46) · landing (44)
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Patent agent:
Armengaud jeune (115) · None (112) · Charles Dony (28) · L. Chassevent (24) · J. Bonnet-Thirion (23) · J. Germain (21) · Hippolyte Josse (20) · E. Blétry (20) · G. de Mestral et F. Harlé (17) · Lavoix et Mosès (15) · None (14) · Boramé et Julien (14) · Dupont et Elluin (12) · Y. Rabilloud et fils (12) · H. Bœttcher fils (11) · Schwab (10) · Rigot et Prévost (9) · Émile Klotz (9)
National tech categories: (Click arrow to add another value)
IPCs:
IPC B64C17/00 (70) · IPC B64C39/00 (68) · IPC B64C1/00 (62) · IPC B64B1/00 (55) · IPC B64B1/58 (40) · IPC B64C3/00 (30) · IPC B64C11/00 (29) · IPC B64C25/00 (24) · None (23) · IPC B64C23/00 (23) · IPC B64C35/00 (22) · IPC B64C3/38 (20) · IPC B64B1/40 (17) · IPC B64C13/00 (16) · IPC B64C27/04 (15) · IPC B64C33/02 (15) · IPC B64C3/54 (13) · IPC B64D17/00 (12) · IPC B64C11/20 (11) · IPC B64C13/04 (11)
CPCs:
CPC B64C17/00 (74) · CPC B64C39/00 (62) · CPC B64B1/00 (55) · CPC B64C2700/6295 (54) · CPC B64B1/58 (40) · CPC B64C2700/6218 (32) · CPC B64C3/00 (31) · CPC B64C13/00 (23) · CPC B64C23/005 (22) · CPC B64C11/006 (20) · CPC B64B1/40 (17) · CPC B64C3/385 (17) · CPC B64C2700/6274 (17) · CPC B64C33/02 (17) · CPC B64C25/06 (16) · CPC B64C35/00 (14) · CPC B64F2700/6226 (14) · CPC B64C2700/6235 (12) · CPC B64C2700/6281 (12)
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