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Patents > IPCs : IPC B64B1/00 or IPC B64C25/00 or IPC B64C39/00 & Number of text pages: 3-4

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Tech fields:
airplane (107) · LTA (92) · design (69) · frame (67) · construction (49) · None (47) · propulsion (47) · navigation (38) · stability (36) · landing (35) · wings (29) · chassis (24) · balloon (23) · propellers (21) · airship (21) · wheels (20) · dirigible (20) · aerodynamics (17) · control (17) · safety (16)
Full specification filed date:
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Supplementary to patent:
None (235) · Patent FR-1916-502839 (3) · Patent US-1911-994106 (2) · Patent FR-1908-394418 (2) · Patent US-1910-993987 (2) · Patent FR-1913-472867 (2) · Patent GB-1913-11207 (2)
Related to aircraft:
Patent agent:
None (48) · Armengaud jeune (16) · None (11) · Marks & Clerk (11) · J. Bonnet-Thirion (8) · Dupont et Elluin (8) · Weismann et Marx (8) · Boult, Wade & Tennant (8) · Brandon frères (8) · Boramé et Julien (8) · Haseltine, Lake & Co. (8) · E. Blétry (7) · Munn & Co. (7) · G. Petiau (6) · Wheatley & Mackenzie (5) · Lavoix et Mosès (4) · G. de Mestral et F. Harlé (4) · Gaston Rose (4) · Brewer & Son (4)
National tech categories:
FR 6.4 (169) · None (106) · FR 6.3 (9) · USPC 244/25 (7) · USPC 244/45R (7) · USPC 244/30 (6) · USPC 244/26 (4) · USPC 244/70 (4) · USPC 244/9 (3) · FR 6.2 (3) · USPC 244/50 (3) · USPC 244/13 (3) · USPC 244/96 (3) · USPC 244/125 (3)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (113) · CPC B64C2700/6295 (108) · CPC B64B1/00 (102) · CPC B64F2700/6226 (28) · CPC B64C39/005 (27) · CPC B64C25/06 (26) · CPC B64C39/08 (21) · CPC B64C25/62 (14) · CPC B64C39/008 (13) · CPC B64C25/52 (12) · CPC B64C25/54 (10) · CPC B64C25/64 (10) · CPC B64C39/003 (5) · CPC B64C39/006 (5) · CPC B64C25/60 (5) · CPC B64B1/40 (4) · CPC B64C25/14 (3) · CPC B64B1/58 (3) · CPC B64C3/56 (3) · CPC B64C25/00 (3)
First filing:
Citations from after 1930:
Number of text pages:
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