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发明名称
Roofing construction
摘要
申请公布号
US1758683(A)
申请公布日期
1930.05.13
申请号
US19290348596
申请日期
1929.03.20
申请人
REGINA LOWY;JULIA LOWY
发明人
分类号
E04D1/06
主分类号
E04D1/06
代理机构
代理人
主权项
地址
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