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经营范围
发明名称
Roofing
摘要
申请公布号
US2199760(A)
申请公布日期
1940.05.07
申请号
US19380231667
申请日期
1938.09.26
申请人
UNITED STATES GYPSUM COMPANY
发明人
SEHUETZ CLYDE C.
分类号
E04D1/26
主分类号
E04D1/26
代理机构
代理人
主权项
地址
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