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发明名称
Building construction
摘要
申请公布号
US2002927(A)
申请公布日期
1935.05.28
申请号
US19310546436
申请日期
1931.06.24
申请人
NATIONAL GYPSUM COMPANY
发明人
VENZIE FREDERICK M.
分类号
E04B5/29;E04B5/36
主分类号
E04B5/29
代理机构
代理人
主权项
地址
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