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发明名称
摘要
申请公布号
JPH0649991(B2)
申请公布日期
1994.06.29
申请号
JP19880264179
申请日期
1988.10.21
申请人
发明人
分类号
E02D31/12;E02D3/08;E02D3/10;(IPC1-7):E02D31/12
主分类号
E02D31/12
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