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发明名称
摘要
申请公布号
JPS556683(Y2)
申请公布日期
1980.02.15
申请号
JP19750049622U
申请日期
1975.04.12
申请人
发明人
分类号
B02B1/08;B02B1/00;(IPC1-7):B02B1/08
主分类号
B02B1/08
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代理人
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