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Patents > IPCs : IPC B64C27/04 or IPC B64C39/00

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Office:
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Tech fields:
airplane (184) · design (123) · None (100) · propulsion (100) · Frame (79) · propellers (76) · wings (68) · construction (67) · stability (62) · helicopter (57) · Lift (47) · aerodynamics (46) · control (42) · whole (37) · navigation (34) · hybrid (33) · sustentation (30) · aeroplane (29) · ascension (27)
Full specification filed date:
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Supplementary to patent:
None (393) · Patent FR-1916-502839 (4)
Related to aircraft:
Patent agent:
None (133) · None (29) · Armengaud jeune (26) · Marks & Clerk (16) · J. Germain (13) · J. Bonnet-Thirion (12) · Weismann et Marx (9) · E. Blétry (9) · Y. Rabilloud et fils (8) · Munn & Co. (8) · Dupont et Elluin (8) · G. de Mestral et F. Harle (7) · C. Blétry (7) · Brandon frères (7) · Lavoix et Mosès (7) · L. Chassevent (7) · Boramé et Julien (7) · Boult, Wade & Tennant (6)
National tech categories:
FR 6.4 (318) · None (155) · FR 6.3 (19) · USPC 244/45R (14) · USPC 244/13 (11) · DE 77h.5 (7) · USPC 244/70 (6) · USPC 244/20 (4) · DE 77 (4) · FR 6.2 (4) · DE 77h.11 (4) · USPC 244/9 (4) · USPC 244/27 (4) · USPC 244/19 (3)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (293) · CPC B64C2700/6295 (287) · CPC B64C2700/6281 (84) · CPC B64C39/005 (63) · CPC B64C27/04 (62) · CPC B64C39/08 (41) · CPC B64C39/008 (26) · CPC B64C27/12 (19) · CPC B64C39/003 (18) · CPC B64C39/006 (12) · CPC B64C27/20 (7) · CPC B64C39/06 (6) · CPC B64C27/52 (6) · CPC B64C39/062 (4) · CPC B64C29/0025 (4) · None (3) · CPC B64C3/385 (3)
First filing:
Citations from after 1930:
Number of diagram pages:

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