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

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None (364) · Seine (12) · Budapest (4) · Paris (4) · Seine-et-Oise (3) · England (2) · Issy-les-Moulineaux (2) · London (2) · Bouches-du-Rhône (2) · New York state (2) · Aude (2) · Finistère (2) · Calvados (2) · Vaucluse (2)
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None (246) · Patent GB-1908-4519 (4) · Patent US-1909-970771 (4) · Patent US-1908-1077750 (3) · Patent FR-1909-403985 (3) · Patent FR-1916-502839 (3)
Related to aircraft:
Patent agent:
None (123) · Armengaud jeune (39) · Boult, Wade & Tennant (11) · Weismann et Marx (10) · Dupont et Elluin (9) · None (9) · G. de Mestral et F. Harlé (7) · Brandon frères (7) · Marks & Clerk (6) · Haseltine, Lake & Co. (6) · Ch. Mardelet (5) · E. Blétry (5) · Lavoix et Mosès (5) · Louis Tailfer (5)
National tech categories:
FR 6.4 (182) · None (103) · HU V/h (47) · CH 129b (10) · AT 77d (6) · DE 77h.5 (6) · FR 6.2 (5) · DK 77 (5) · CH 115 (4) · RU Group V (4) · GB 4 propel & steer (4) · FR 6.1 (4)
IPCs:
None (148) · IPC B64C39/00 (42) · IPC B64C1/00 (39) · IPC B64C17/00 (36) · IPC B64B1/00 (14) · IPC B64C3/00 (13) · IPC B64C23/00 (11) · IPC B64C35/00 (10) · IPC B64C3/56 (9) · IPC B64C25/00 (9) · IPC B64C33/02 (8) · IPC B64C3/54 (8) · IPC B64C11/00 (6) · IPC B64C3/52 (5) · IPC B64C3/18 (5) · IPC B64C27/04 (4) · IPC B64B1/58 (4) · IPC B64C13/00 (4) · IPC B64C3/38 (4)
CPCs:
None (107) · CPC B64C17/00 (40) · CPC B64C39/00 (34) · CPC B64C2700/6295 (26) · CPC B64B1/00 (20) · CPC B64C2700/6218 (17) · CPC B64C3/00 (14) · CPC B64C1/00 (12) · CPC B64C23/005 (11) · CPC B64C33/02 (10) · CPC B64C2700/6274 (10) · CPC B64C35/00 (9) · CPC B64C13/00 (9) · CPC B64C3/56 (9) · CPC B64F2700/6226 (7) · CPC B64C25/06 (7) · CPC B64C3/54 (6)
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