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发明名称
摘要
申请公布号	GB1228424(A)	申请公布日期	1971.04.15
申请号	GBD1228424	申请日期	1968.04.05
申请人		发明人
分类号	B22C15/10	主分类号	B22C15/10
代理机构		代理人
主权项
地址

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