Drilldown: Patents

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Patents > Office : FR or JP & Tech fields : Airplane or hybrid or safety or None & National tech categories : AT 77d or DE 77 or DE 77h.5 or FR 6.2 or None

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IPCs:
None (989) · IPC B64C17/00 (10) · IPC B64C1/00 (8) · IPC B64C23/00 (5) · IPC B64C39/00 (5) · IPC B64C3/56 (3) · IPC B64C3/42 (2) · IPC B64C3/54 (2) · IPC B64C11/16 (2) · IPC B64C1/30 (2)
CPCs:
CPC B64C39/00 (128) · CPC B64C2700/6295 (119) · CPC B64C17/00 (96) · None (73) · CPC B64C23/005 (63) · CPC B64C2700/6274 (54) · CPC B64C33/02 (49) · CPC B64C3/385 (44) · CPC B64C11/006 (33) · CPC B64C2700/6212 (30) · CPC B64C3/00 (30) · CPC B64C35/00 (29) · CPC B64C2700/6218 (26) · CPC B64C1/00 (25) · CPC B64C13/00 (25) · CPC B64C2700/6256 (23) · CPC B64C2700/6219 (22) · CPC B64C33/00 (18) · CPC B64C2700/6281 (18) · CPC B64C2700/6228 (17)
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