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发明名称
Floor construction
摘要
申请公布号
US1872101(A)
申请公布日期
1932.08.16
申请号
US19310562944
申请日期
1931.09.15
申请人
BAIR GEORGE L
发明人
BAIR GEORGE L.
分类号
E04B5/21
主分类号
E04B5/21
代理机构
代理人
主权项
地址
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