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发明名称
Method of making rigid building elements
摘要
申请公布号
US2292774(A)
申请公布日期
1942.08.11
申请号
US19380227614
申请日期
1938.08.31
申请人
UNITED STATES GYPSUM COMPANY
发明人
ROOS CARLISLE K.
分类号
B28B1/52
主分类号
B28B1/52
代理机构
代理人
主权项
地址
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