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Patents > Tech fields : automatic stability or propellers & National tech categories : FR 6.4 or USPC 244/30

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Supplementary to patent:
None (242) · Patent FR-1908-405961 (5) · Patent FR-1908-407090 (4) · Patent FR-1910-414695 (3) · Patent DE-1911-11-16 Otto Albin Budig (3)
Related to aircraft:
Patent agent:
None (81) · Armengaud jeune (58) · None (21) · E. Blétry (18) · J. Bonnet-Thirion (15) · Schwab (13) · L. Chassevent (12) · Charles Dony (11) · J. Germain (11) · Lavoix et Mosès (10) · Boramé et Julien (10) · G. de Mestral et F. Harlé (9) · Hippolyte Josse (8) · de Bongé (8) · H. Bœttcher fils (7) · Dupont et Elluin (7) · Weismann et Marx (6)
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IPCs:
IPC B64C17/00 (129) · IPC B64C1/00 (93) · IPC B64C39/00 (42) · IPC B64C11/00 (36) · IPC B64C23/00 (18) · IPC B64C11/04 (14) · IPC B64C27/04 (13) · IPC B64C11/20 (13) · IPC B64C17/06 (11) · None (10) · IPC B64B1/00 (8) · IPC B64D35/04 (8) · IPC B64D27/00 (7) · IPC B64C11/16 (7) · IPC B64C33/02 (6) · IPC B64C35/00 (5) · IPC B64C11/36 (5) · IPC B64C27/00 (5)
CPCs:
CPC B64C17/00 (137) · CPC B64C2700/6218 (56) · CPC B64C39/00 (34) · CPC B64C2700/6214 (24) · CPC B64C2700/6212 (24) · CPC B64C2700/6295 (22) · CPC B64C11/006 (22) · CPC B64C23/005 (18) · CPC B64C2700/6274 (18) · CPC B64C17/06 (15) · CPC B64C11/04 (14) · CPC B64C2700/6216 (13) · CPC B64C11/00 (10) · CPC B64C2700/6281 (9) · CPC B64B1/00 (8) · CPC B64D35/04 (8) · CPC B64C27/04 (8) · CPC B64C2700/6219 (8) · CPC B64C11/205 (8) · CPC B64C11/16 (7)
First filing:
Citations from after 1930:
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