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发明名称
摘要
申请公布号
JPS60169310(U)
申请公布日期
1985.11.09
申请号
JP19840057780U
申请日期
1984.04.18
申请人
发明人
分类号
E01C19/45;E01C19/42;(IPC1-7):E01C19/42
主分类号
E01C19/45
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