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发明名称
摘要
申请公布号
JPS55154652(U)
申请公布日期
1980.11.07
申请号
JP19790052553U
申请日期
1979.04.18
申请人
发明人
分类号
B22C15/08;B22C21/00;B22C21/02;(IPC1-7):B22C15/08
主分类号
B22C15/08
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代理人
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