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Patents > Tech fields : helicopter or wings & Grant date: 1910 - 1919

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Supplementary to patent:
None (443) · Patent US-1909-970771 (10) · Patent GB-1911-12232‎‎ (7) · Patent GB-1909-12556 (7) · Patent FR-1910-417989 (4) · Patent AU-1914-14892 (4) · Patent FR-1909-403985 (4) · Patent BE-1911-04-14 Lucien-Constant-Joseph Harel (4) · Patent FR-1908-407090 (4) · Patent FR-1911-429224 (3) · Patent AT-1912-75092 (3) · Patent IT-1915-148941 (3) · Patent GB-1911-29012 (3) · Patent DE-1912-03-18 Allgemeine Elektricitäts-Gesellschaft‎‎ (3) · Patent US-1910-993987 (3) · Patent CH-1912-62201 (3) · Patent FR-1911-440594 (3)
Related to aircraft:
Patent agent:
None (219) · Armengaud jeune (36) · None (30) · Marks & Clerk (17) · G. de Mestral et F. Harlé (13) · L. Chassevent (12) · E. Blétry (11) · Weismann et Marx (11) · Hippolyte Josse (10) · J. Bonnet-Thirion (9) · Haseltine, Lake & Co. (8) · Boult, Wade & Tennant (6) · Charles Dony (6) · Dupont et Elluin (6) · C. A. Snow & Co. (5) · G. Petiau (5) · Victor J. Evans (5) · Fayollet (5) · W. P. Thompson & Co. (5) · Brandon frères (5)
National tech categories:
FR 6.4 (276) · None (168) · HU V/h (46) · AT 77d (33) · USPC 244/6 (11) · IT 8 (7) · RU Group V (6) · BE K (6) · CH 129b (5) · DE 77h.5 (5) · USPC 244/60 (4) · USPC 244/22 (4) · USPC 244/65 (4) · USPC 244/72 (4) · USPC 244/20 (4) · USPC 244/80 (4) · USPC 244/17.21 (4) · USPC 244/35R (4)
IPCs:
None (263) · IPC B64C39/00 (49) · IPC B64C17/00 (40) · IPC B64C1/00 (39) · IPC B64C3/00 (33) · IPC B64C27/04 (28) · IPC B64C23/00 (24) · IPC B64C3/38 (24) · IPC B64C11/00 (19) · IPC B64C33/02 (18) · IPC B64C3/56 (15) · IPC B64C3/54 (14) · IPC B64C3/52 (14) · IPC B64C35/00 (11) · IPC B64C3/48 (11) · IPC B64C13/00 (8) · IPC B64B1/00 (8) · IPC B64C27/00 (7)
CPCs:
None (135) · CPC B64C17/00 (45) · CPC B64C23/005 (43) · CPC B64C3/00 (34) · CPC B64C39/00 (32) · CPC B64C2700/6281 (30) · CPC B64C33/02 (29) · CPC B64C2700/6295 (28) · CPC B64C13/00 (22) · CPC B64C2700/6233 (21) · CPC B64C3/385 (19) · CPC B64C27/04 (19) · CPC B64C2700/6218 (18) · CPC B64C3/56 (17) · CPC B64C39/005 (15) · CPC B64C3/52 (15) · CPC B64C2700/6274 (15) · CPC B64C3/54 (14) · CPC B64C11/006 (14)
First filing:
Citations from after 1930:
Number of diagram pages:

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