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发明名称
摘要
申请公布号
JPS54120504(U)
申请公布日期
1979.08.23
申请号
JP19780016104U
申请日期
1978.02.10
申请人
发明人
分类号
B25D11/12;B25D11/00;(IPC1-7):E21C1/12
主分类号
B25D11/12
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