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发明名称
摘要
申请公布号
JPS5639136(U)
申请公布日期
1981.04.13
申请号
JP19790119505U
申请日期
1979.08.29
申请人
发明人
分类号
B02C13/13;B02C13/28;(IPC1-7):B02C13/13
主分类号
B02C13/13
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代理人
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