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Patents > IPCs : IPC B64C1/00 or IPC B64C39/00 & Number of text pages: 2-9

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Tech fields:
None (370) · Airplane (254) · stability (199) · design (99) · Frame (82) · Wings (65) · construction (65) · Automatic stability (56) · propulsion (52) · Control (49) · aerodynamics (40) · fuselage (39) · propellers (38) · lift (38) · whole (33) · navigation (31) · Subsystem (31) · gyroscope (27) · Equilibrium (26) · rudder (26)
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None (144) · None (52) · Armengaud jeune (45) · J. Bonnet-Thirion (23) · Marks & Clerk (20) · Boult, Wade & Tennant (20) · E. Blétry (17) · J. Germain (14) · Haseltine, Lake & Co. (13) · Boramé et Julien (13) · Brandon freres (12) · Weismann et Marx (12) · Lavoix et Mosès (11) · Herbert Haddan & Co. (11) · Dupont et Elluin (11) · Charles Dony (11) · L. Chassevent (11) · Y. Rabilloud et fils (9) · Hippolyte Josse (9)
National tech categories:
FR 6.4 (523) · None (259) · DE 77h.5 (19) · USPC 244/45R (12) · FR 6.3 (11) · USPC 244/13 (8) · USPC 244/70 (6) · DE 77h.11 (5) · USPC 244/119 (4) · USPC 244/9 (3) · USPC 244/87 (3) · USPC 244/27 (3) · USPC 244/19 (3) · FR 6.1 (3) · FR 6.2 (3)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (278) · CPC B64C17/00 (262) · CPC B64C2700/6295 (236) · CPC B64C2700/6218 (189) · CPC B64C1/00 (80) · CPC B64C17/06 (65) · CPC B64C39/005 (55) · CPC B64C2700/6216 (45) · CPC B64C39/08 (43) · CPC B64C2700/6228 (33) · CPC B64C2700/6219 (32) · CPC B64C2001/0063 (26) · CPC B64C39/008 (26) · CPC B64C39/003 (18) · CPC B64C2001/0081 (16) · CPC B64C1/061 (10) · CPC B64C39/006 (10) · CPC B64C2700/6225 (10) · CPC B64C1/06 (6) · CPC B64C1/08 (5)
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