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经营范围
发明名称
Fire-resistant wall construction
摘要
申请公布号
US2689472(A)
申请公布日期
1954.09.21
申请号
US19510204172
申请日期
1951.01.03
申请人
UNITED STATES GYPSUM COMPANY
发明人
ROBERTSON JOHN A.
分类号
E04B1/94
主分类号
E04B1/94
代理机构
代理人
主权项
地址
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