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发明名称
摘要
申请公布号
JPS5345322(Y2)
申请公布日期
1978.10.30
申请号
JP19750137944U
申请日期
1975.10.09
申请人
发明人
分类号
B02C17/22;B02C17/18;(IPC1-7):B02C17/18
主分类号
B02C17/22
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