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发明名称
FLEXIBLE BOX CULVERT
摘要
申请公布号
JPH0988172(A)
申请公布日期
1997.03.31
申请号
JP19950249133
申请日期
1995.09.27
申请人
GEOSTR CORP
发明人
SAJI TOSHIO
分类号
E03F3/04;(IPC1-7):E03F3/04
主分类号
E03F3/04
代理机构
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