Air propeller with automatically variable pitch,申请号US19350052240-传众专利搜索

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发明名称	Air propeller with automatically variable pitch
摘要
申请公布号	US2146334(A)	申请公布日期	1939.02.07
申请号	US19350052240	申请日期	1935.11.29
申请人	DE CARIA UGO	发明人	CARIA UGO DE
分类号	B64C11/34	主分类号	B64C11/34
代理机构		代理人
主权项
地址

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