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经营范围
发明名称
Improvements in or relating to building construcition
摘要
申请公布号
GB630207(A)
申请公布日期
1949.10.07
申请号
GB19460028698
申请日期
1946.09.25
申请人
HENRY GEORGE HAYES
发明人
分类号
E04B1/21
主分类号
E04B1/21
代理机构
代理人
主权项
地址
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