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发明名称
摘要
申请公布号
JPS58172506(U)
申请公布日期
1983.11.18
申请号
JP19820067534U
申请日期
1982.05.11
申请人
发明人
分类号
E01C21/00;E01C23/09;E01C23/12;(IPC1-7):E01C23/09
主分类号
E01C21/00
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