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发明名称
Improvements in structural elements of sheet metal
摘要
申请公布号
GB640341(A)
申请公布日期
1950.07.19
申请号
GB19490006205
申请日期
1946.12.05
申请人
OTTAKAR GEORG FERDINAND PAULSSEN
发明人
分类号
E04C3/07
主分类号
E04C3/07
代理机构
代理人
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