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发明名称
摘要
申请公布号
JPS6346117(Y2)
申请公布日期
1988.12.01
申请号
JP19810002044U
申请日期
1981.01.09
申请人
发明人
分类号
B02C2/10;B02C7/14;B02C7/18;(IPC1-7):B02C7/14
主分类号
B02C2/10
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代理人
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