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发明名称
Building structure
摘要
申请公布号
US2473018(A)
申请公布日期
1949.06.14
申请号
US19470763705
申请日期
1947.07.25
申请人
BURKE H. CRITCHFIELD
发明人
EDWARDS THOMAS J.
分类号
E04B2/70
主分类号
E04B2/70
代理机构
代理人
主权项
地址
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