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Techtypes > Keywords : Propellers or stability

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simple tech terms (10) · CPC B64D/62 (8) · CPC B64C11/00 (4) · USPC 244/65 (4) · CPC F42B10/02 (3) · USPC 244/75.1 (3) · CPC B64C11/20 (3) · USPC 244/3.24 (3) · USPC 244/62 (3) · CPC B64C27/00 (3) · CPC B64C (3) · Swiss patent classifications, 1908-1920 (3) · CPC F05B (3)
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None (84) · USPC 416/129 (2)
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