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发明名称
Building construction
摘要
申请公布号
US1891511(A)
申请公布日期
1932.12.20
申请号
US19300503635
申请日期
1930.12.20
申请人
VENZIE FREDERICK M
发明人
VENZIE FREDERICK M.
分类号
E04B9/24
主分类号
E04B9/24
代理机构
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