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发明名称
RELIEVING METHOD OF EARTH PRESSURE ACTING ON CULVERT
摘要
申请公布号
JPH02311634(A)
申请公布日期
1990.12.27
申请号
JP19890130452
申请日期
1989.05.25
申请人
NAKAGAWA SEKKEI JIMUSHO:KK
发明人
NAKAGAWA YOSHIHIRO
分类号
E02D31/10;E03F3/04
主分类号
E02D31/10
代理机构
代理人
主权项
地址
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