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Patents > CPCs : CPC B64C23/005 or CPC B64C27/04

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None (391) · Seine (10) · California (5) · Seine-et-Oise (5) · Paris (4) · Nord (4) · Aisne (4) · New York (3) · Indiana (3) · Chicago (3) · Charente-Inférieure (3) · Meurthe-et-Moselle (3)
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Tech fields:
None (178) · airplane (124) · helicopter (87) · propulsion (85) · hybrid (66) · frame (53) · propeller (52) · design (43) · navigation (43) · propellers (40) · stability (37) · ascension (32) · lift (30) · wings (24) · takeoff (23) · construction (20) · sustentation (20) · whole (19) · Heavier-than-air (19) · LTA (19)
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Supplementary to patent:
None (386) · Patent FR-1909-410140 (5) · Patent FR-1908-407090 (4) · Patent AT-1909-40038 (2) · Patent DE-1909-220044 (2) · Patent AU-1916-630 (2) · Patent FR-1909-404954 (2) · Patent US-1911-1006282 (2) · Patent DE-1910-06-18 Carl Hanschke (2) · Patent FR-1915-502520 (2) · Patent FR-1915-525800 (2)
Related to aircraft:
Patent agent:
None (142) · None (26) · Victor J. Evans (11) · Munn & Co. (9) · Armengaud jeune (9) · G. de Mestral et F. Harlé (8) · W. P. Thompson & Co. (6) · J. Bonnet-Thirion (6) · Marks & Clerk (6) · Schwab (6) · E. Bletry (5) · J. Germain (5) · J. Fayollet (5) · Borame et Julien (4) · Paul Caquet (4) · Chassevent (4) · Matray freres et Cie (4)
National tech categories:
FR 6.4 (171) · None (159) · USPC 244/6 (47) · USPC 244/66 (20) · USPC 244/12.1 (15) · USPC 244/80 (7) · FR 6.3 (7) · USPC 244/60 (6) · DE 77 (5) · USPC 244/139 (5) · USPC 244/35R (5) · USPC 244/100R (5) · USPC 244/48 (4) · USPC 244/51 (3) · DE 77h.5 (3) · USPC 244/65 (3) · USPC 244/104R (3)
CPCs: (Click arrow to add another value)
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