Drilldown: Techtypes

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Techtypes > Keywords : Propellers or frame or lift

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simple tech terms (18) · CPC B64D/62 (8) · CPC B64C27/54 (4) · USPC 244/65 (4) · USPC 244/62 (4) · LTA (4) · CPC B64C11/00 (4) · CPC B64C11/20 (3) · CPC F05B (3) · CPC B64C27/00 (3) · dirigible (3) · Swiss patent classifications, 1908-1920 (3) · USPC 244 (3) · USPC 244/12.1 (3) · propulsion (3)
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None (92) · USPC 416/129 (2)
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