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发明名称
Floor structure
摘要
申请公布号
US1891513(A)
申请公布日期
1932.12.20
申请号
US19310575838
申请日期
1931.11.18
申请人
VENZIE FREDERICK M
发明人
VENZIE FREDERICK M.
分类号
E04B5/29
主分类号
E04B5/29
代理机构
代理人
主权项
地址
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