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Patents > Application number : 494571D or None & National tech categories : FR 6.3 or FR 6.4

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Supplementary to patent:
None (517) · Patent FR-1909-410140 (4) · Patent FR-1881-142748 (3) · Patent FR-1878-124576 (3) · Patent FR-1836-5429 (3)
Related to aircraft:
Patent agent:
None (231) · Armengaud jeune (39) · Blétry aîné (17) · Chassevent (17) · Desnos (16) · None (14) · L. Chassevent (12) · Dupont et Elluin (12) · Armengaud aîné (12) · Société Marillier et Robelet (12) · Brandon frères (10) · E. Blétry (9) · Dieuaide (9) · Boramé et Julien (8) · Dumas (8) · J. Germain (7) · Weismann et Marx (7) · Casalonga (7) · Société Matray frères (7) · Société Louis Gudman et Cie (7)
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IPCs:
None (454) · IPC B64D17/00 (28) · IPC B64D1/04 (16) · IPC B64B1/00 (15) · IPC B64D27/00 (13) · IPC B64D35/04 (12) · IPC B64C17/00 (10) · IPC B64C39/00 (9) · IPC B64D7/02 (7) · IPC B64F1/14 (6) · IPC B64D17/54 (6) · IPC B64B1/58 (6) · IPC B64C23/00 (5) · IPC F41G3/24 (5) · IPC B64C1/00 (5) · IPC B64D45/00 (5)
CPCs:
None (453) · CPC B64D17/00 (27) · CPC B64D1/04 (16) · CPC B64B1/00 (15) · CPC B64D35/04 (12) · CPC B64D27/00 (11) · CPC B64C17/00 (10) · CPC B64D7/02 (7) · CPC B64C39/00 (7) · CPC B64D17/54 (6) · CPC B64B1/58 (6) · CPC B64F1/14 (6) · CPC B64D2700/62508 (5) · CPC F41G3/24 (5) · CPC B64D2700/62763 (5)
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