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发明名称
摘要
申请公布号
JPS61169102(U)
申请公布日期
1986.10.20
申请号
JP19850050486U
申请日期
1985.04.03
申请人
发明人
分类号
E01C1/00;E01D19/12;(IPC1-7):E01C1/00
主分类号
E01C1/00
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