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发明名称
摘要
申请公布号
JPS5469467(U)
申请公布日期
1979.05.17
申请号
JP19770144179U
申请日期
1977.10.26
申请人
发明人
分类号
B02C17/22;(IPC1-7):B02C17/22
主分类号
B02C17/22
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代理人
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