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发明名称
Building material
摘要
申请公布号
US2718673(A)
申请公布日期
1955.09.27
申请号
US19510237965
申请日期
1951.07.21
申请人
UNITED STATES GYPSUM COMPANY
发明人
NELSSON NELS
分类号
E04F13/08
主分类号
E04F13/08
代理机构
代理人
主权项
地址
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