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Patents > IPCs : IPC B64B1/00 or IPC B64C1/00 or IPC B64C25/00 or IPC B64C39/00 & Number of text pages: 4-30

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Tech fields:
Airplane (132) · stability (119) · design (60) · LTA (59) · automatic stability (52) · frame (44) · Wings (43) · None (40) · construction (39) · control (32) · propellers (32) · aerodynamics (31) · lift (29) · propulsion (29) · navigation (24) · landing (19) · gyroscope (18) · Sustentation (15)
Full specification filed date:
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Supplementary to patent:
None (226) · Patent US-1914-1368226 (2) · Patent BE-1910-230887 (2) · Patent IT-1913-03-20 Vigilio Baldo (2) · Patent US-1913-1087946 (2) · Patent HU-1913-Pédery-Varsányi-Zoltán (2) · Patent US-1916-1179978 (2) · Patent FR-1883- (2)
Related to aircraft:
Patent agent:
None (46) · None (20) · Marks & Clerk (13) · Armengaud jeune (12) · Dupont et Elluin (9) · Haseltine, Lake & Co. (7) · H. D. Fitzpatrick & Co. (6) · Lavoix et Mosès (6) · G. Petiau (6) · Munn & Co. (5) · Boult, Wade & Tennant (5) · Brandon frères (5) · Weismann et Marx (5)
National tech categories:
FR 6.4 (171) · None (114) · USPC 244/30 (9) · FR 6.3 (8) · USPC 244/45R (4) · USPC 244/25 (4) · USPC 244/47 (3) · USPC 244/13 (2) · USPC 244/97 (2) · FR 6.1 (2) · USPC 244/26 (2) · USPC 244/20 (2) · USPC 244/19 (2) · FR 5.3 (2) · USPC 244/9 (2) · USPC 244/79 (2) · USPC 244/234 (2)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C17/00 (92) · CPC B64C2700/6218 (77) · CPC B64C39/00 (74) · CPC B64C2700/6295 (74) · CPC B64B1/00 (60) · CPC B64C17/06 (27) · CPC B64C2700/6216 (19) · CPC B64C39/005 (18) · CPC B64C39/08 (13) · CPC B64C1/00 (13) · CPC B64C39/003 (8) · CPC B64C25/06 (7) · CPC B64C2001/0063 (6) · CPC B64C39/008 (5) · CPC B64C2700/6219 (4) · CPC B64F2700/6226 (4) · CPC B64C25/64 (4)
First filing:
Citations from after 1930:
Number of text pages:
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