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Patents > Applicant type: None & Tech fields : helicopter or None

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None (2078) · USPC 244/139 (19) · USPC 244/147 (17) · USPC 244/142 (15) · IT 8 (15) · USPC 244/153R (13) · FR 5 (11) · USPC 244/53A (9) · USPC 244/149 (8) · USPC 244/144 (7) · FR 6.4 (7) · FR 6.3 (7) · USPC 244/3.1 (6) · USPC 244/138R (5) · USPC 244/3.14 (5) · DE 77 (5) · USPC 244/90R (5) · USPC 244/65 (5) · DE 77h (5)
CPCs:
None (1490) · CPC B64C11/006 (125) · CPC B64C11/346 (69) · CPC B64C11/48 (59) · CPC B64C11/36 (48) · CPC B63H1/12 (38) · CPC F05B2260/74 (35) · CPC B64C11/343 (32) · CPC B64C2700/6295 (32) · CPC Y02E10/722 (30) · CPC F03D11/00 (30) · CPC B63H1/04 (29) · CPC B64C11/06 (28) · CPC B64C17/00 (28) · CPC B64C39/00 (26) · CPC B64C11/065 (23) · CPC B64C3/48 (22) · CPC B64C27/33 (21) · CPC B64C23/005 (20)
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