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Patents > IPCs : IPC B64C33/00 or IPC B64C39/00

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Tech fields:
airplane (182) · design (123) · propulsion (98) · frame (88) · None (88) · wings (76) · stability (69) · construction (65) · propellers (58) · aerodynamics (47) · lift (47) · flapping (44) · navigation (42) · control (41) · Whole (37) · aeroplane (29) · rudder (28) · sustentation (28) · hybrid (27)
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Supplementary to patent:
None (388) · Patent FR-1916-502839 (4) · Patent AT-1912-75092 (3)
Related to aircraft:
Patent agent:
None (144) · Armengaud jeune (24) · None (24) · Weismann et Marx (13) · Marks & Clerk (13) · E. Bletry (12) · J. Bonnet-Thirion (12) · J. Germain (10) · Munn & Co. (8) · Dupont et Elluin (7) · L. Chassevent (7) · Boramé et Julien (7) · Brandon freres (6) · Chassevent (6) · Boult, Wade & Tennant (6) · G. de Mestral et F. Harle (5) · Charles Assi (5) · C. Blétry (5) · Y. Rabilloud et fils (5) · Lavoix et Mosès (5)
National tech categories:
FR 6.4 (291) · None (143) · USPC 244/22 (17) · USPC 244/45R (14) · FR 6.3 (13) · USPC 244/13 (11) · USPC 244/11 (8) · DE 77h.5 (7) · USPC 244/70 (6) · USPC 244/72 (5) · USPC 244/9 (4) · USPC 244/20 (4) · FR 6.2 (4) · USPC 244/27 (4) · DE 77h.11 (4) · USPC 244/19 (3) · USPC 244/64 (3)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (293) · CPC B64C2700/6295 (287) · CPC B64C33/00 (64) · CPC B64C39/005 (63) · CPC B64C39/08 (41) · CPC B64C39/008 (26) · CPC B64C33/02 (19) · CPC B64C39/003 (18) · CPC B64C39/006 (12) · CPC B64C39/062 (4) · CPC B64C39/06 (3) · CPC B64C3/385 (3) · None (3)
First filing:
Citations from after 1930:

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