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发明名称
Improvements in light metal girder structures
摘要
申请公布号
GB534267(A)
申请公布日期
1941.03.03
申请号
GB19400001472
申请日期
1940.01.24
申请人
BERNARD JAMES GIBBS
发明人
分类号
E04C3/04;E04C3/09
主分类号
E04C3/04
代理机构
代理人
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