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发明名称
摘要
申请公布号	FR2147982(A1)	申请公布日期	1973.03.11
申请号	FR19720024666	申请日期	1972.07.07
申请人	NIPPON KOKAN	发明人
分类号	C01B3/22;C01B3/34;C21B13/00;(IPC1-7):01B2/00;21B5/00	主分类号	C01B3/22
代理机构		代理人
主权项
地址

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