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Patents > Tech fields : lift or propellers & National tech categories : DE 77 or FR 6.2

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CPCs:
CPC B63H1/26 (10) · None (7) · CPC B64C11/006 (7) · CPC B63H2001/122 (7) · CPC B64C11/16 (7) · CPC B64C11/04 (4) · CPC B63H1/265 (3) · CPC B63H1/12 (3) · CPC B63H1/20 (3) · CPC B63H2005/005 (2) · CPC B63H1/36 (2) · CPC B64B1/00 (2) · CPC B64C11/18 (2) · CPC B64C33/02 (2) · CPC B64C11/24 (2) · CPC B63H3/00 (2)
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Showing below up to 64 results in range #1 to #64.

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