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Patents > Office : FR or GB or IN or NO & CPCs : CPC B64C23/005 or CPC B64C2700/6281 & First filing : No or Yes

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Tech fields:
None (147) · airplane (71) · helicopter (58) · propulsion (51) · hybrid (40) · Design (39) · Propellers (37) · Ascension (30) · Lift (23) · frame (21) · Construction (20) · wings (19) · control (16) · sustentation (15) · heavier-than-air (14) · stability (14) · propeller (13) · Aerodynamics (13) · whole (11) · Navigation (11)
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Supplementary to patent:
None (251) · Patent FR-1908-407090 (4) · Patent FR-1909-410140 (3) · Patent DE-1910-06-18 Carl Hanschke (2) · Patent FR-1915-478440 (2) · Patent AU-1916-630 (2) · Patent AT-1909-40038 (2) · Patent FR-1915-525800 (2) · Patent US-1911-1011761 (2) · Patent US-1911-1003885 (2) · Patent FR-1908-394254‎ (2) · Patent DE-1909-220044 (2)
Related to aircraft:
Patent agent:
None (143) · None (17) · G. de Mestral et F. Harlé (7) · Marks & Clerk (6) · J. Germain (6) · J. Bonnet-Thirion (5) · C. Blétry‎ (5) · Armengaud jeune (5) · Matray freres et Cie (4) · J. S. Withers & Spooner (4) · Paul Caquet (4) · Schwab (4) · Browne & Co. (4) · Boramé et Julien (4) · Brandon frères (3) · Lavoix et Mosès (3) · E. Blétry (3) · Rigot et Prevost (3) · J. Fayollet (3) · W. P. Thompson & Co. (3)
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Cites these patents:
None (324)
Citations from after 1930:
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