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发明名称
摘要
申请公布号	FR830213(A)	申请公布日期	1938.07.22
申请号	FRD830213	申请日期
申请人		发明人
分类号	C21C7/00	主分类号	C21C7/00
代理机构		代理人
主权项
地址

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