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发明名称
摘要
申请公布号
JPS56133337(U)
申请公布日期
1981.10.09
申请号
JP19810031618U
申请日期
1981.03.09
申请人
发明人
分类号
B02C7/12;B02C7/17;D21D1/30;(IPC1-7):B02C7/00
主分类号
B02C7/12
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代理人
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