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发明名称
摘要
申请公布号
JPS5621677(U)
申请公布日期
1981.02.26
申请号
JP19790103897U
申请日期
1979.07.27
申请人
发明人
分类号
B22C9/08;B22C9/00;F16L15/00;(IPC1-7):F16L15/00
主分类号
B22C9/08
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代理人
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