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发明名称
摘要
申请公布号
JPS52147109(U)
申请公布日期
1977.11.08
申请号
JP19760055539U
申请日期
1976.04.30
申请人
发明人
分类号
B02C13/14;B22C5/00;B22C5/02;(IPC1-7):B22C5/00
主分类号
B02C13/14
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