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Patents > IPCs : B64C11/34 or IPC B64C23/00 or IPC B64C27/04

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Tech fields:
airplane (88) · Helicopter (72) · propulsion (59) · None (58) · hybrid (51) · propellers (46) · design (42) · ascension (36) · frame (26) · lift (26) · wings (23) · Construction (22) · control (19) · Stability (19) · navigation (18) · propeller (18) · heavier-than-air (18) · Sustentation (18) · aerodynamics (16) · whole (13)
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Supplementary to patent:
None (198) · Patent FR-1909-410140 (5) · Patent FR-1908-407090 (4) · Patent US-1911-1011761 (2) · Patent FR-1915-502520 (2) · Patent FR-1908-394254‎ (2) · Patent FR-1915-478440 (2) · Patent US-1911-1009048 (2) · Patent DE-1910-06-18 Carl Hanschke (2) · Patent DE-1909-220044 (2) · Patent FR-1909-404954 (2) · Patent AU-1916-630 (2) · Patent AT-1909-40038 (2) · Patent FR-1915-525800 (2)
Related to aircraft:
Patent agent:
None (58) · None (19) · Armengaud jeune (8) · J. Germain (8) · G. de Mestral et F. Harlé (7) · Marks & Clerk (6) · Schwab (6) · J. Bonnet-Thirion (5) · Lavoix et Moses (5) · C. Blétry (5) · J. Fayollet (4) · Matray freres et Cie (4) · Paul Caquet (4) · J. S. Withers & Spooner (4)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C23/005 (171) · CPC B64C2700/6274 (108) · CPC B64C2700/6281 (83) · CPC B64C27/04 (62) · CPC B64C27/12 (21) · CPC B64C2700/6273 (16) · CPC B64C27/20 (10) · CPC B64C2700/6271 (9) · CPC B64C27/52 (6) · CPC B64C23/00 (5) · CPC B64C29/0025 (4) · CPC B64C39/06 (3)
First filing:
Cites these patents:
None (282)
Citations from after 1930:
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