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发明名称
Building covering
摘要
申请公布号
US1802868(A)
申请公布日期
1931.04.28
申请号
US19290359756
申请日期
1929.05.02
申请人
BLACK SYSTEMS INC.
发明人
BLACK EDWARD ROSCOE
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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