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发明名称
ARCH STRUCTURE FOR CULVERT: FLEXIBLY CONNECTED WING MEMBERS
摘要
申请公布号
NZ208253(A)
申请公布日期
1988.02.12
申请号
NZ19840208253
申请日期
1984.05.31
申请人
PETERSON, CARL WILLIAM
发明人
PETERSON, CARL WILLIAM
分类号
E01F5/00;(IPC1-7):E01F5/00;E03F3/04;E21D10/04;E21D11/20
主分类号
E01F5/00
代理机构
代理人
主权项
地址
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