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发明名称
Improvements in spacer members for the reinforcement of reinforced concrete
摘要
申请公布号
GB1042918(A)
申请公布日期
1966.09.14
申请号
GB19630046001
申请日期
1963.11.21
申请人
FERDINAND WILLIAM BERRY
发明人
分类号
E04C5/20
主分类号
E04C5/20
代理机构
代理人
主权项
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