Controllable pitch propeller,申请号US19310545470-传众专利搜索

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发明名称	Controllable pitch propeller
摘要
申请公布号	US2001189(A)	申请公布日期	1935.05.14
申请号	US19310545470	申请日期	1931.06.19
申请人	FLETCHER HAROLD A	发明人	FLETCHER HAROLD A.
分类号	B64C11/36	主分类号	B64C11/36
代理机构		代理人
主权项
地址

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