Production of group iv-a metals,申请号US19520327159-传众专利搜索

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发明名称	Production of group iv-a metals
摘要
申请公布号	US2773787(A)	申请公布日期	1956.12.11
申请号	US19520327159	申请日期	1952.12.20
申请人	E. I. DU PONT DE NEMOURS AND COMPANY	发明人	RICK CHRISTIAN E.
分类号	C22B34/12	主分类号	C22B34/12
代理机构		代理人
主权项
地址

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