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发明名称
Composite highway beam construction
摘要
申请公布号
US2078485(A)
申请公布日期
1937.04.27
申请号
US19340711373
申请日期
1934.02.15
申请人
DUNHAM ANSEL W
发明人
DUNHAM ANSEL W.
分类号
E01C11/16
主分类号
E01C11/16
代理机构
代理人
主权项
地址
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