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经营范围
发明名称
Improvements in roof structures
摘要
申请公布号
GB538781(A)
申请公布日期
1941.08.15
申请号
GB19400006094
申请日期
1940.04.04
申请人
BERNARD JAMES GIBBS
发明人
分类号
E04B7/02
主分类号
E04B7/02
代理机构
代理人
主权项
地址
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