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Patents > IPCs : IPC B64C11/00 or IPC B64C17/00 or IPC B64C30/00

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Supplementary to patent:
None (431) · Patent FR-1908-396249 (5) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent DE-1911-11-16 Otto Albin Budig (3) · Patent GB-1909-8531‎ (3) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent FR-1910-417989 (3) · Patent FR-1910-415470 (3)
Related to aircraft:
Patent agent:
None (150) · None (39) · Armengaud jeune (34) · E. Blétry (19) · Marks & Clerk (18) · J. Bonnet-Thirion (17) · Schwab (11) · Matray frères et Cie (10) · Charles Dony (10) · Lavoix et Moses (10) · Abel & Imray (10) · J. Germain (10) · L. Chassevent (8) · Boult, Wade & Tennant (8) · Dom. Casalonga (8)
National tech categories:
FR 6.4 (410) · None (194) · DE 77h.5 (15) · USPC 244/80 (13) · FR 6.2 (12) · FR 6.3 (9) · USPC 416/139 (5) · DE 77h.6 (4) · USPC 244/15 (4) · FR 5.8 (3) · USPC 244/93 (2) · USPC 244/65 (2) · USPC 244/177 (2)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C17/00 (497) · CPC B64C2700/6218 (187) · CPC B64C2700/6212 (109) · CPC B64C11/006 (98) · CPC B64C2700/6214 (61) · CPC B64C11/00 (48) · CPC B64C2700/6219 (28) · CPC B64C2700/6215 (15) · CPC B64C11/001 (12) · CPC B64D2700/62692 (10) · CPC B64C11/005 (10) · CPC B64C11/346 (5) · CPC B64C11/007 (4) · CPC B64C30/00 (4) · CPC B64C1/00 (4) · CPC B64C2700/6211 (4) · CPC B64C3/48 (3) · CPC B64C23/005 (3)
First filing:
Citations from after 1930:
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