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Patents > Applicant firm: None & IPCs : IPC B64C1/00 or IPC B64C11/00 or IPC B64C3/00 or IPC B64C39/00

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National tech categories:
FR 6.4 (717) · None (366) · DE 77h.5 (24) · FR 6.3 (22) · FR 6.2 (16) · USPC 244/45R (13) · USPC 244/13 (10) · USPC 244/48 (8) · USPC 244/119 (7) · USPC 244/70 (6) · USPC 244/46 (6) · DE 77h.11 (6) · USPC 416/139 (5) · DE 77 (5) · FR 5.8 (4) · USPC 244/90R (4) · USPC 244/27 (4) · FR 5.3 (4) · DE 77h.7 (4)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (292) · CPC B64C17/00 (269) · CPC B64C2700/6295 (258) · CPC B64C2700/6218 (185) · CPC B64C3/00 (146) · CPC B64C11/006 (109) · CPC B64C17/06 (71) · CPC B64C1/00 (70) · CPC B64C39/005 (64) · CPC B64C2700/6235 (59) · CPC B64C2700/6233 (53) · CPC B64C2700/6216 (51) · CPC B64C11/00 (49) · CPC B64C39/08 (47) · CPC B64C2700/6219 (36) · CPC B64C39/008 (29) · CPC B64C2700/6228 (28) · CPC B64C39/003 (19) · CPC B64C2001/0063 (17) · CPC B64C11/001 (13)
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