Variable pitch propeller,申请号US19470753287-传众专利搜索

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发明名称	Variable pitch propeller
摘要
申请公布号	US2573764(A)	申请公布日期	1951.11.06
申请号	US19470753287	申请日期	1947.06.07
申请人	GREEN CARL J	发明人	GREEN CARL J.
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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