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Patents > CPCs : CPC B64C11/20 or CPC B64C2700/6256 or CPC B64C39/005

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Tech fields:
None (182) · Airplane (57) · propulsion (53) · control (42) · frame (33) · navigation (32) · stability (31) · steering (30) · propeller (27) · Propellers (22) · rudder (19) · wings (19) · LTA (19) · design (17) · helicopter (13) · aerodynamics (13) · hybrid (13) · construction (10) · HTA (10)
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Supplementary to patent:
None (331) · Patent US-1909-1008096 (2) · Patent FR-1912-451312 (2) · Patent FR-1902-326476 (2) · Patent GB-1911-04-28 Belton Tattnall Hamilton (2) · Patent DE-1916-332540 (2) · Patent GB-1913-3848 (2) · Patent GB-1911-12188 (2) · Patent US-1916-1208684 (2) · Patent CA-1909-126457 (2) · Patent US-1913-1118124 (2)
Related to aircraft:
Patent agent:
None (156) · Marks & Clerk (13) · Armengaud jeune (12) · Munn & Co. (10) · None (10) · Brewer & Son (8) · Boult, Wade & Tennant (6) · Weismann et Marx (5) · E. Blétry (4) · Brierley & Howard (4) · Abel & Imray (3) · H. D. Fitzpatrick & Co. (3) · Brierley & Appleyard (3) · J. Germain (3) · J. D. Roots & Co. (3)
National tech categories:
None (206) · FR 6.4 (80) · USPC 244/20 (21) · USPC 244/70 (17) · USPC 244/9 (13) · FR 6.3 (7) · DE 77h.6 (6) · USPC 244/19 (5) · USPC 244/39 (4) · DE 77h.5 (4) · USPC 244/119 (3) · USPC 244/87 (2) · USPC 244/48 (2) · USPC 244/90R (2) · USPC 416/112 (2) · USPC 416/113 (2) · USPC 244/64 (2) · USPC 244/218 (2) · FR 6.2 (2)
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