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发明名称
摘要
申请公布号
JPS63161944(U)
申请公布日期
1988.10.21
申请号
JP19870056121U
申请日期
1987.04.13
申请人
发明人
分类号
E02D29/02;E04G11/00;E04G21/22;(IPC1-7):E02D29/02
主分类号
E02D29/02
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代理人
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