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发明名称
REDUCING METHOD OF EARTH PRESSURE OF ARCH TYPE CULVERT
摘要
申请公布号
JPH05339975(A)
申请公布日期
1993.12.21
申请号
JP19920195794
申请日期
1992.06.12
申请人
NAKAGAWA YOSHIHIRO
发明人
NAKAGAWA YOSHIHIRO
分类号
E02D31/10;E03F3/04;(IPC1-7):E03F3/04
主分类号
E02D31/10
代理机构
代理人
主权项
地址
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