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Patents > IPCs : IPC B64C3/38 or IPC B64C39/00 & First filing: Yes

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Tech fields:
airplane (140) · None (107) · Design (60) · wings (54) · propulsion (51) · stability (49) · frame (44) · control (39) · construction (32) · navigation (31) · propellers (26) · aerodynamics (26) · whole (25) · lift (20) · airfoil (18) · fuselage (17) · LTA (16) · sustentation (16) · rudder (14)
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Patent agent:
None (83) · None (33) · Armengaud jeune (16) · Marks & Clerk (10) · J. Bonnet-Thirion (8) · L. Chassevent (7) · Haseltine, Lake & Co. (7) · Weismann et Marx (6) · J. Germain (6) · Munn & Co. (6) · Boult, Wade & Tennant (5) · Chassevent (5) · E. Blétry (5) · Y. Rabilloud et fils (5) · Dom. Casalonga (5)
National tech categories:
FR 6.4 (193) · None (139) · USPC 244/45R (14) · DE 77h.5 (11) · USPC 244/13 (9) · USPC 244/48 (8) · DE 77h.11 (5) · USPC 244/90R (4) · USPC 244/70 (4) · USPC 244/234 (4) · USPC 244/27 (4) · USPC 244/20 (3) · DE 77 (3) · USPC 244/9 (3) · FR 6.3 (3)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (163) · CPC B64C2700/6295 (162) · CPC B64C3/385 (98) · CPC B64C39/005 (43) · CPC B64C39/08 (39) · CPC B64C39/008 (21) · CPC B64C3/38 (15) · CPC B64C39/003 (8) · CPC B64C39/006 (7) · CPC Y02T50/145 (5) · None (5) · CPC B64C3/42 (4) · CPC B64C39/062 (4) · CPC B64C39/06 (3) · CPC B64C2700/6242 (3)
First filing: (Click arrow to add another value)
Citations from after 1930:
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Showing below up to 171 results in range #251 to #421.

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