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Patents > IPCs: IPC B64C39/00 & First filing: Yes

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Tech fields:
airplane (79) · None (58) · propulsion (47) · Design (44) · wings (37) · stability (35) · Frame (30) · propellers (23) · control (22) · construction (22) · Whole (22) · aeroplane (22) · navigation (21) · aerodynamics (20) · lift (17) · LTA (13) · fuselage (13) · monoplane (11) · wheels (10) · heavier-than-air (10)
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Patent agent:
None (65) · None (17) · Armengaud jeune (12) · Marks & Clerk (8) · Munn & Co. (6) · J. Germain (6) · L. Chassevent (5) · Weismann et Marx (5) · Haseltine, Lake & Co. (4) · Dupont et Elluin (4) · Chassevent (4) · C. Blétry (4) · Boult, Wade & Tennant (4) · Borame et Julien (3) · E. Blétry (3) · G. de Mestral et F. Harle (3) · J. Bonnet-Thirion (3) · Brandon frères (3) · Lavoix et Mosès (3) · H. D. Fitzpatrick & Co. (3)
National tech categories:
FR 6.4 (132) · None (92) · USPC 244/45R (14) · USPC 244/13 (10) · DE 77h.5 (5) · USPC 244/9 (4) · DE 77h.11 (4) · USPC 244/20 (4) · USPC 244/27 (4) · USPC 244/70 (4) · FR 6.3 (3)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C2700/6295 (180) · CPC B64C39/00 (164) · CPC B64C39/005 (42) · CPC B64C39/08 (36) · CPC B64C39/008 (19) · CPC B64C39/003 (8) · CPC B64C39/006 (7) · CPC B64C39/062 (4) · CPC B64C3/385 (3) · None (3) · CPC B64C2700/6297 (2) · CPC Y10S244/903 (2) · CPC B64C3/42 (2) · CPC B64C39/06 (2)
First filing: (Click arrow to add another value)
Citations from after 1930:
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