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Patents > Filing date: 1909 & National tech categories: FR 6.4 & Family year: 1909

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Tech fields:
airplane (122) · design (73) · LTA (58) · Frame (45) · stability (44) · control (40) · None (39) · propellers (39) · wings (39) · propulsion (35) · construction (33) · aerodynamics (24) · Navigation (23) · lift (19) · subsystem (19) · rudder (17) · automatic stability (15) · steering (13) · airship (12) · hybrid (12)
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Supplementary to patent:
None (251) · Patent FR-1909-398825 (3) · Patent FR-1909-405220 (2)
Related to aircraft:
Patent agent:
None (58) · Armengaud jeune (34) · None (25) · J. Bonnet-Thirion (15) · Weismann et Marx (12) · E. Blétry (12) · Charles Dony (9) · Borame et Julien (8) · Lavoix et Mosès (8) · Schwab (8) · L. Chassevent (7) · Y. Rabilloud et fils (6) · Chassevent (6) · G. de Mestral et F. Harlé (5) · Émile Klotz (5) · Charles Assi (5) · C. Blétry (5) · C. Baumann (5) · Hippolyte Josse (5)
National tech categories: (Click arrow to add another value)
IPCs:
IPC B64C39/00 (37) · IPC B64C17/00 (28) · IPC B64B1/00 (28) · IPC B64B1/58 (22) · IPC B64C1/00 (21) · IPC B64C23/00 (19) · IPC B64C3/38 (15) · IPC B64C11/00 (12) · None (11) · IPC B64C33/02 (10) · IPC B64C3/00 (10) · IPC B64B1/40 (9) · IPC B64C33/00 (9) · IPC B64C13/00 (8) · IPC B64C3/52 (6) · IPC B64C3/48 (5) · IPC B64C25/00 (4) · IPC B64C11/20 (4) · IPC B64C35/00 (4)
CPCs:
CPC B64C39/00 (36) · CPC B64C17/00 (30) · CPC B64B1/00 (28) · CPC B64C2700/6295 (25) · CPC B64B1/58 (22) · CPC B64C23/005 (20) · CPC B64C3/385 (14) · CPC B64C2700/6274 (13) · CPC B64C13/00 (12) · CPC B64C33/02 (11) · CPC B64C3/00 (10) · CPC B64C11/006 (10) · CPC B64C33/00 (9) · CPC B64B1/40 (9) · CPC B64C2700/6218 (8) · CPC B64C2700/6233 (7) · CPC B64C2700/6212 (7) · CPC B64C3/52 (6)
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