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发明名称
Building covering
摘要
申请公布号
US1959519(A)
申请公布日期
1934.05.22
申请号
US19300497101
申请日期
1930.11.21
申请人
BLACK SYSTEMS, INC.
发明人
BLACK EDWARD ROSCOE
分类号
E04D1/28
主分类号
E04D1/28
代理机构
代理人
主权项
地址
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