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发明名称
摘要
申请公布号	JPS56160637(U)	申请公布日期	1981.11.30
申请号	JP19800057546U	申请日期	1980.04.25
申请人		发明人
分类号	B22C21/08;B22C23/00;(IPC1-7):B22C21/08	主分类号	B22C21/08
代理机构		代理人
主权项
地址

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