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发明名称
摘要
申请公布号
JPH049648(U)
申请公布日期
1992.01.28
申请号
JP19900051679U
申请日期
1990.05.16
申请人
发明人
分类号
B02C17/08;B02C17/18;(IPC1-7):B02C17/08
主分类号
B02C17/08
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代理人
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