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发明名称
Rigid tension-truss bridge
摘要
申请公布号
US2642598(A)
申请公布日期
1953.06.23
申请号
US19460715119
申请日期
1946.12.09
申请人
BERETTA JOHN W
发明人
BERETTA JOHN W.
分类号
E01D6/00;E01D11/02
主分类号
E01D6/00
代理机构
代理人
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地址
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