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经营范围
发明名称
Improvements in structural elements
摘要
申请公布号
GB850273(A)
申请公布日期
1960.10.05
申请号
GB19560010013
申请日期
1956.03.29
申请人
DAVID CLEMENT BURGESS
发明人
分类号
E04C2/32
主分类号
E04C2/32
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代理人
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