Method of making airplane propellers,申请号US19440522871-传众专利搜索

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发明名称	Method of making airplane propellers
摘要
申请公布号	US2463101(A)	申请公布日期	1949.03.01
申请号	US19440522871	申请日期	1944.02.18
申请人	A. O. SMITH CORPORATION	发明人	GRUETJEN FREDERICK A.
分类号	B21D53/78	主分类号	B21D53/78
代理机构		代理人
主权项
地址

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