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发明名称
Improvements in building elements
摘要
申请公布号
GB625423(A)
申请公布日期
1949.06.28
申请号
GB19470012854
申请日期
1947.12.23
申请人
FELIX ZEYER
发明人
分类号
E04B2/10
主分类号
E04B2/10
代理机构
代理人
主权项
地址
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