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经营范围
发明名称
Trussed bridge structure
摘要
申请公布号
US2762069(A)
申请公布日期
1956.09.11
申请号
US19510226823
申请日期
1951.05.17
申请人
LAYCOCK JOHN N
发明人
LAYCOCK JOHN N.
分类号
E01D11/02;E01D15/133;E01D15/20
主分类号
E01D11/02
代理机构
代理人
主权项
地址
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