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发明名称
Improvements in or relating to spacing members for use with the reinforcement in reinforced concrete structures
摘要
申请公布号
GB688989(A)
申请公布日期
1953.03.18
申请号
GB19500030913
申请日期
1950.12.19
申请人
PERCIVAL CLIFFORD KESTEVEN
发明人
分类号
E04C5/20
主分类号
E04C5/20
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代理人
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