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发明名称
摘要
申请公布号
JPH04131442(U)
申请公布日期
1992.12.03
申请号
JP19910035541U
申请日期
1991.05.20
申请人
发明人
分类号
B02C17/16;B02C17/18;(IPC1-7):B02C17/18
主分类号
B02C17/16
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