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发明名称
Building structure
摘要
申请公布号
US2321568(A)
申请公布日期
1943.06.15
申请号
US19420427614
申请日期
1942.01.21
申请人
WILSON WINFRED E
发明人
WILSON WINFRED E.
分类号
E04C2/52
主分类号
E04C2/52
代理机构
代理人
主权项
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