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经营范围
发明名称
Wall structure
摘要
申请公布号
US1945991(A)
申请公布日期
1934.02.06
申请号
US19310567598
申请日期
1931.10.08
申请人
PITTSBURGH STEEL COMPANY
发明人
BENEDICT EDWARD L.
分类号
E04B2/72;E04B2/84
主分类号
E04B2/72
代理机构
代理人
主权项
地址
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