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Patents > Tech fields : Design or steam & Number of text pages: 3-4

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None (247) · Patent GB-1908-4519 (4) · Patent US-1909-970771 (4) · Patent FR-1916-502839 (3) · Patent US-1908-1077750 (3) · Patent FR-1909-403985 (3)
Related to aircraft:
Patent agent:
None (129) · Armengaud jeune (38) · Weismann et Marx (11) · Boult, Wade & Tennant (10) · Dupont et Elluin (10) · None (8) · G. de Mestral et F. Harlé (7) · Haseltine, Lake & Co. (6) · Lavoix et Mosès (6) · Marks & Clerk (6) · Ch. Mardelet (6) · Brandon frères (6) · E. Blétry (6) · Louis Tailfer (5) · E. Blum & Co. (4) · Paul Blum (4) · M. Zerolo (4) · C. Blétry (4) · Wheatley & Mackenzie (4)
National tech categories:
FR 6.4 (194) · None (94) · HU V/h (49) · CH 129b (11) · AT 77d (6) · DE 77h.5 (6) · DK 77 (5) · FR 6.2 (5) · FR 6.1 (4) · RU Group V (4) · CH 115 (4) · GB 4 propel & steer (3)
IPCs:
None (139) · IPC B64C39/00 (43) · IPC B64C1/00 (40) · IPC B64C17/00 (37) · IPC B64B1/00 (17) · IPC B64C35/00 (13) · IPC B64C3/00 (12) · IPC B64C23/00 (12) · IPC B64C3/56 (9) · IPC B64C25/00 (9) · IPC B64C33/02 (8) · IPC B64C3/54 (7) · IPC B64C11/00 (7) · IPC B64C3/38 (5) · IPC B64C3/18 (5) · IPC B64C3/52 (5) · IPC B64C27/04 (4) · IPC B64C13/00 (4) · IPC B64B1/58 (4)
CPCs:
None (107) · CPC B64C17/00 (41) · CPC B64C39/00 (35) · CPC B64C2700/6295 (27) · CPC B64B1/00 (21) · CPC B64C2700/6218 (19) · CPC B64C23/005 (12) · CPC B64C1/00 (12) · CPC B64C3/00 (12) · CPC B64C35/00 (12) · CPC B64C2700/6274 (10) · CPC B64C33/02 (10) · CPC B64C3/56 (9) · CPC B64C13/00 (9) · CPC B64F2700/6226 (7) · CPC B64C25/06 (7) · CPC B64C11/00 (6) · CPC B64C3/54 (6)
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