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发明名称
摘要
申请公布号
JPS546679(U)
申请公布日期
1979.01.17
申请号
JP19770080298U
申请日期
1977.06.16
申请人
发明人
分类号
B02C17/18;B02C17/00;(IPC1-7):B02C17/00
主分类号
B02C17/18
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