Variable-pitch airscrew,申请号US19420430459-传众专利搜索

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发明名称	Variable-pitch airscrew
摘要
申请公布号	US2372416(A)	申请公布日期	1945.03.27
申请号	US19420430459	申请日期	1942.02.11
申请人	ROTOL LIMITED	发明人	FAIRHURST LEONARD GASKELL
分类号	B64C11/06	主分类号	B64C11/06
代理机构		代理人
主权项
地址

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