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发明名称
摘要
申请公布号
JPH01137751(U)
申请公布日期
1989.09.20
申请号
JP19880031602U
申请日期
1988.03.11
申请人
发明人
分类号
B02C19/22;B30B9/16;(IPC1-7):B02C19/22
主分类号
B02C19/22
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代理人
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