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发明名称
Improvements in floor construction
摘要
申请公布号
GB481984(A)
申请公布日期
1938.03.22
申请号
GB19360029745
申请日期
1936.11.02
申请人
ROBERT HOPEWELL
发明人
分类号
E04B5/29;E04B5/36
主分类号
E04B5/29
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