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发明名称
Roofing element
摘要
申请公布号
US2174098(A)
申请公布日期
1939.09.26
申请号
US19360081635
申请日期
1936.05.25
申请人
UNITED STATES GYPSUM COMPANY
发明人
STEIN OSCAR
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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