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发明名称
摘要
申请公布号
JPS4729786(U)
申请公布日期
1972.12.05
申请号
JP19710031458U
申请日期
1971.04.23
申请人
发明人
分类号
B23B27/20;(IPC1-7):B23B27/20
主分类号
B23B27/20
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