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经营范围
发明名称
Improvements in or relating to concrete floor and like constructions
摘要
申请公布号
GB789164(A)
申请公布日期
1958.01.15
申请号
GB19540031505
申请日期
1954.11.01
申请人
HAROLD DESMOND ROBERT RIDGEON
发明人
分类号
E04B5/28
主分类号
E04B5/28
代理机构
代理人
主权项
地址
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