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发明名称
摘要
申请公布号
JPS544487(B2)
申请公布日期
1979.03.07
申请号
JP19740095988
申请日期
1974.08.20
申请人
发明人
分类号
B02C18/00;B02C23/06
主分类号
B02C18/00
代理机构
代理人
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地址
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