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Patents > CPCs : CPC B61B13/08 or CPC B64C2700/6256 or CPC B64C39/005

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Tech fields:
None (116) · airplane (77) · Control (59) · propulsion (50) · stability (38) · navigation (36) · steering (34) · frame (30) · rudder (22) · design (21) · wings (21) · propeller (20) · LTA (19) · helicopter (13) · aerodynamics (13) · hybrid (13) · flapping (11) · Lift (11) · HTA (10) · landing (10)
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Supplementary to patent:
None (286) · Patent GB-1911-12188 (2) · Patent US-1916-1208684 (2) · Patent CA-1909-126457 (2) · Patent US-1913-1118124 (2) · Patent FR-1902-326476 (2) · Patent US-1909-1008096 (2) · Patent FR-1912-451312 (2) · Patent GB-1911-04-28 Belton Tattnall Hamilton (2)
Related to aircraft:
Patent agent:
None (119) · Marks & Clerk (12) · Armengaud jeune (11) · Munn & Co. (10) · None (9) · Brewer & Son (7) · Boult, Wade & Tennant (6) · Weismann et Marx (5) · Brierley & Howard (4) · E. Blétry (4) · Brierley & Appleyard (3) · G. F. Redfern & Co.‎ (3) · Abel & Imray (3) · H. D. Fitzpatrick & Co. (3)
National tech categories:
None (171) · FR 6.4 (68) · USPC 244/20 (20) · USPC 244/70 (17) · USPC 244/9 (13) · FR 6.3 (7) · USPC 244/39 (4) · DE 77h.5 (4) · USPC 244/19 (4) · USPC 244/119 (3) · USPC 244/72 (2) · USPC 244/218 (2) · USPC 244/48 (2) · USPC 244/64 (2) · USPC 244/87 (2) · USPC 244/90R (2) · USPC 416/112 (2) · DE 77 (2) · USPC 416/113 (2)
CPCs: (Click arrow to add another value)
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