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Patents > CPCs : CPC B64C2700/6218 or CPC B64C39/005 or CPC F41A19/05

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Tech fields:
None (195) · stability (106) · airplane (95) · propulsion (46) · frame (33) · automatic stability (31) · navigation (26) · design (21) · propeller (20) · Wings (19) · LTA (18) · aerodynamics (17) · rudder (15) · Equilibrium (15) · propellers (14) · hybrid (14) · control (13) · lift (12) · helicopter (12)
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None (306) · Patent DE-1911-11-16 Otto Albin Budig (3) · Patent NZ-1909-25865 (2) · Patent FR-1910-435648 (2) · Patent FR-1910-423998 (2) · Patent FR-1909-408872 (2) · Patent FR-1912-450608 (2) · Patent FR-1914-475066 (2) · Patent GB-1909-8531‎ (2) · Patent GB-1911-12188 (2) · Patent DE-1910-04-04 August Wendtland (2) · Patent HU-1913-Pédery-Varsányi-Zoltán (2) · Patent IT-1909-09-10-Romagnoli (2) · Patent FR-1902-326476 (2) · Patent CA-1909-126457 (2) · Patent US-1916-1208684 (2) · Patent BE-1912-08-13-Panian (2) · Patent BE-1912-03-16-Toussaint-Lepere (2) · Patent US-1913-1203221 (2)
Related to aircraft:
Patent agent:
None (128) · None (17) · Armengaud jeune (12) · Munn & Co. (10) · Haseltine, Lake & Co. (10) · Marks & Clerk (8) · E. Blétry (7) · Boult, Wade & Tennant (5) · J. Fayollet (5) · H. D. Fitzpatrick & Co. (5) · Charles Dony (4) · Herbert Haddan & Co. (4) · Schwab (4) · P. Follin (4) · Paul Coulomb (4) · Lavoix et Mosès (4) · J. Bonnet-Thirion (4) · Brandon freres (4) · J. Bonnet-Thirion et Breton (4)
National tech categories:
None (174) · FR 6.4 (150) · USPC 244/20 (21) · USPC 244/70 (17) · USPC 244/9 (13) · FR 6.3 (7) · DE 77h.5 (5) · USPC 244/19 (5) · USPC 244/39 (4) · USPC 244/119 (3) · USPC 416/113 (2) · USPC 416/112 (2) · USPC 244/64 (2) · USPC 244/48 (2) · USPC 244/218 (2)
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