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发明名称
Improvements in or relating to concrete floors, roofs and the like structures
摘要
申请公布号
GB734770(A)
申请公布日期
1955.08.10
申请号
GB19520001339
申请日期
1952.01.17
申请人
WALLACE ALFRED EVANS
发明人
分类号
E04B5/23;E04C3/22
主分类号
E04B5/23
代理机构
代理人
主权项
地址
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